Saving player position

i have a save + load script, and i'm trying to make something like an RPG. first major problem is that i need to save the player's position, and load it when the game is turned on again. here's the current script using UnityEngine; using System.Collections; using System.Collections.Generic; using System.Runtime.Serialization.Formatters.Binary; using System.IO;

 public static class SaveLoad {
 
     public static void Save() {
 
         BinaryFormatter bf = new BinaryFormatter();
         FileStream file = File.Create (Application.persistentDataPath + "/savedGames.gd"); //you can call it anything you want
         PlayerData data = new PlayerData ();
         bf.Serialize(file,data);
         file.Close();
     }   
     
     public static void Load() {
         if(File.Exists(Application.persistentDataPath + "/savedGames.gd")) {
             BinaryFormatter bf = new BinaryFormatter();
             FileStream file = File.Open(Application.persistentDataPath + "/savedGames.gd", FileMode.Open);
             PlayerData data=(PlayerData)bf.Deserialize (file);
             file.Close();
         }
 
     }
 }
 [System.Serializable] class PlayerData
 {
     public Vector3 playerpos;
 }

now, the way i understand it i'm supposed to write something like data.playerpos=transform.position; before the bf.serialize. and when i load the game, it will be transform.position=data.playerpos; problem is, that unity tells me i need the saveload script to be monobehaviour for the transform to be a thing, but when i change it to monobehaviour, it tells me that static classes cant derive from monobehaviour. how else can i go and try to save the playerposition?