saving array to bin file

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I'm doing this save/load script in the quickest way possible because of my school deadlines. my problem is i'm having these errors:

 SerializationException: serializationStream supports seeking, but its length is 0
 System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.NoCheckDeserialize (System.IO.Stream serializationStream, System.Runtime.Remoting.Messaging.HeaderHandler handler) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.cs:155)
 System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize (System.IO.Stream serializationStream) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.cs:136)
 GameControl.OnEnable () (at Assets/Scripts/GameControl.cs:146)
 
 
 NullReferenceException: Object reference not set to an instance of an object
 GameControl.OnDisable () (at Assets/Scripts/GameControl.cs:70)
 GameControl.OnApplicationFocus (Boolean hasFocus) (at Assets/Scripts/GameControl.cs:138)
 UnityEditorInternal.InternalEditorUtility:OnGameViewFocus(Boolean)
 UnityEditor.HostView:OnLostFocus()
 
 IOException: Sharing violation on path C:\Users\XXX\AppData\LocalLow\XXX\Swarm\PlayerData.eut
 System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean anonymous, FileOptions options) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.IO/FileStream.cs:320)
 System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize)
 (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare,int)
 System.IO.File.Create (System.String path, Int32 bufferSize) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.IO/File.cs:135)
 System.IO.File.Create (System.String path) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.IO/File.cs:130)
 GameControl.OnDisable () (at Assets/Scripts/GameControl.cs:61)

i'm really new at coding, so i need help with the script. it's messy and inefficient, but please bare with me lol.

 using UnityEngine;
 using System.Collections;
 using System;
 using System.Runtime.Serialization.Formatters.Binary;
 using System.IO;
 
 public class GameControl : MonoBehaviour {
 
   public static GameControl gameControl;
 
   [Header("Ad counters")]
   public int gameCounter;
   public int showAdCounter = 3;
 
   [Header ("Store Variables")]
   public float coins;
   public float[] playerDesign;
   public int hairColorsAvailable = 9;
   public bool[] isHairColorPurchased;
   public int shirtColorsAvailable = 9;
   public bool[] isShirtColorPurchased;
   public int skinColorsAvailable = 9;
   public bool[] isSkinColorPurchased;
   public float[] zombieDesign;
   public int zombieSkinColorsAvailable = 9;
   public bool[] isZombieSkinColorPurchased;
   public int zombieShirtColorsAvailable = 9;
   public bool[] isZombieShirtColorPurchased;
   public int weaponEquipped;
   public int weaponsAvailable = 9;
   public bool[] isWeaponPurchased;
 
   [Header("Time Variables")]
   public DateTime currentDate;
 
   [Header("Settings Variables")]
   public float musicPercentage = 0.5f;
   public float sfxPercentage = 0.5f;
 
   [Header ("Records")]
   public int bestKillCount;
 
   [Header("Free coins per update")]
   public int versionNumber;
   public int newVersionNumber;
   public bool isRewardClaimed;
 
   void Start(){
     playerDesign = new float[3];
     zombieDesign = new float[2];
     isHairColorPurchased = new bool[hairColorsAvailable];
     isShirtColorPurchased = new bool[shirtColorsAvailable];
     isSkinColorPurchased = new bool[skinColorsAvailable];
     isZombieSkinColorPurchased = new bool[zombieSkinColorsAvailable];
     isZombieShirtColorPurchased = new bool[zombieShirtColorsAvailable];
     isWeaponPurchased = new bool[weaponsAvailable];
   }
 
   void OnDisable(){ /*save data*/
     BinaryFormatter bf = new BinaryFormatter();
     FileStream file = File.Create(Path.Combine(Application.persistentDataPath, "PlayerData.eut"));
 
     PlayerData data = new PlayerData();
 
     /*insert data here to save*/
     data.coins = coins;
 
     int x = 0;
     while (x < playerDesign.Length){
       data.playerDesign[x] = playerDesign[x];
       x++;
     }
     x = 0;
     while (x < hairColorsAvailable){
       data.isHairColorPurchased[x] = isHairColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < hairColorsAvailable){
       data.isShirtColorPurchased[x] = isShirtColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < shirtColorsAvailable){
       data.isShirtColorPurchased[x] = isShirtColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < skinColorsAvailable){
       data.isSkinColorPurchased[x] = isSkinColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < 2){
       data.zombieDesign[x] = zombieDesign[x];
       x++;
     }
     x = 0;
     while (x < zombieShirtColorsAvailable){
       data.isZombieShirtColorPurchased[x] = isZombieShirtColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < zombieSkinColorsAvailable){
       data.isZombieSkinColorPurchased[x] = isZombieSkinColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < weaponsAvailable){
       data.isWeaponPurchased[x] = isWeaponPurchased[x];
       x++;
     }
 
     data.weaponEquipped = weaponEquipped;
 
     data.currentDate = currentDate;
 
     data.musicPercentage = musicPercentage;
     data.sfxPercentage = sfxPercentage;
 
     data.bestKillCount = bestKillCount;
 
     data.versionNumber = versionNumber;
     data.isRewardClaimed = isRewardClaimed;
 
     bf.Serialize(file, data);
     file.Close();
   }
 
   void OnApplicationPause(bool pauseStatus){
     if (pauseStatus){
       OnDisable();
     }
   }
 
   void OnApplicationFocus(bool hasFocus){
     if (!hasFocus){
       OnDisable();
     }
   }
 
   void OnEnable(){ /*load data*/
     Start();
     BinaryFormatter bf = new BinaryFormatter();
     FileStream file = File.Open(Path.Combine(Application.persistentDataPath, "PlayerData.eut"), FileMode.Open);
     PlayerData data = (PlayerData)bf.Deserialize(file);
     file.Close();
 
     /*transfer data here*/
     coins = data.coins;
 
     int x = 0;
     while (x < 3){
       playerDesign[x] = data.playerDesign[x];
       x++;
     }
     x = 0;
     while (x < hairColorsAvailable){
       isHairColorPurchased[x] = data.isHairColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < hairColorsAvailable){
       isShirtColorPurchased[x] = data.isShirtColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < shirtColorsAvailable){
       isShirtColorPurchased[x] = data.isShirtColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < skinColorsAvailable){
       isSkinColorPurchased[x] = data.isSkinColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < 2){
       zombieDesign[x] = data.zombieDesign[x];
       x++;
     }
     x = 0;
     while (x < zombieShirtColorsAvailable){
       isZombieShirtColorPurchased[x] = data.isZombieShirtColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < zombieSkinColorsAvailable){
       isZombieSkinColorPurchased[x] = data.isZombieSkinColorPurchased[x];
       x++;
     }
     x = 0;
     while (x < weaponsAvailable){
       isWeaponPurchased[x] = data.isWeaponPurchased[x];
       x++;
     }
 
     weaponEquipped = data.weaponEquipped;
 
     currentDate = data.currentDate;
 
     musicPercentage = data.musicPercentage;
     sfxPercentage = data.sfxPercentage;
 
     bestKillCount = data.bestKillCount;
 
     versionNumber = data.versionNumber;
     isRewardClaimed = data.isRewardClaimed;
   }
 
     void Awake(){
     Screen.sleepTimeout = SleepTimeout.NeverSleep;
     if (gameControl == null){
         DontDestroyOnLoad(gameObject);
       gameControl = this;
     }
     else if (gameControl != this){
       Destroy(gameObject);
     }
   }
 
 }
 
 [Serializable]
 class PlayerData{
   public float coins;
   public float[] playerDesign;
   public bool[] isHairColorPurchased;
   public bool[] isShirtColorPurchased;
   public bool[] isSkinColorPurchased;
   public float[] zombieDesign;
   public bool[] isZombieSkinColorPurchased;
   public bool[] isZombieShirtColorPurchased;
   public int weaponEquipped;
   public bool[] isWeaponPurchased;
 
   public DateTime currentDate;
 
   public float musicPercentage = 0.5f;
   public float sfxPercentage = 0.5f;
 
   public int bestKillCount;
 
   public int versionNumber;
   public bool isRewardClaimed;
 }

need help, thanks!

saving array to bin file

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