HELP - Save and Load Level data in a list

Hello everybody,

I have been struggling with this issue for several days now so I am coming for help. Forgive me if my question might be simple but I am new with coding.

What I want to do is pretty simple. I would like to save all my levels data in a list. For now, I have 2 levels and each level has 3 variables: a string, an int and a bool. Each level is a different scene.

I also would like my game to be able to easily access the information (meaning the 3 variables).

Here is my code

 using UnityEngine;
 using UnityEngine.SceneManagement;
 using System.Collections;
 using System.Collections.Generic;
 using System;
 using System.Runtime.Serialization.Formatters.Binary; 
 using System.IO;
 
 public class CurrentLevelInfo : MonoBehaviour
 {
     public List <Level> savedLevels = new List<Level>();
 
     public static CurrentLevelInfo levelManager;
 
     // test
     string levelName;
 
 
     void Awake ()
     {
         LoadLevels ();
 
         // We load the name of the level
         levelName = Application.loadedLevelName;
 
         // And we ask the information about the specific level and we get his
         switch(levelName)
         {
         case "Level1":
     
             Level.current = savedLevels[0];
             break;
         case "Level2":
             Level.current = savedLevels[1];
             break;
         }
     }
         
     // Subscribe to event
     void OnEnable ()
     {
         NpcScript.HasFoundConstellation += NewConstellationFound;
 
     }
 
     // Unsubscribe to event
     void OnDisable ()
     {
         NpcScript.HasFoundConstellation -= NewConstellationFound;
     }
 
     void NewConstellationFound ()
     {
         Level.current.hasDiscoveredConstellation = true;
         SaveLevels ();
     }
 
     public void SaveLevels()
     {
     BinaryFormatter bf2 = new BinaryFormatter();
         FileStream file = File.Create(Application.dataPath + "/savedLevels.dat");
 
         bf2.Serialize(file, savedLevels);
         file.Close();
     }
 
     public void LoadLevels ()
     {
         if(File.Exists(Application.persistentDataPath + "/savedLevels.dat"))
         {
             BinaryFormatter bf2 = new BinaryFormatter();
             FileStream file = File.Open(Application.persistentDataPath + "/savedLevels.dat", FileMode.Open);
             savedLevels = (List<Level>)bf2.Deserialize(file);
             file.Close();
         }
     }
 }
 
 [Serializable]
 public class Level
 {
     public static Level current;
 
     public int neededConstellationsStars;
     public string constellationName;
     public bool hasDiscoveredConstellation;
 }

If you guys could help me. I can read the list info per level but saving and loading don't seem to work.