Simple SO/Json data stuff

PlayerData.cs

public class PlayerData
{
    public string Name;
    public Vector3 Position;
    
    public int Coins;
}

PlayerDataObject.cs

using System;
using System.IO;
using Newtonsoft.Json;
using UnityEngine;

public class PlayerDataObject : ScriptableObject
{
    public PlayerData PlayerData => _playerData;

    private PlayerData _playerData = new PlayerData();

    [Tooltip("Automatically save data on app exit")]
    [SerializeField] private bool _autoSave = true;

    private void OnEnable()
    {
        Load();
    }

    private void OnDestroy()
    {
        if(_autoSave)
            Save();
    }

    public override void Load()
    {
        try
        {
            string fn = Path.Combine(Application.persistentDataPath, "Save", _playerData.GetType().Name + ".json");
            if (File.Exists(fn))
            {
                string json = File.ReadAllText(fn);
                // Add decryption here
                _playerData = JsonConvert.DeserializeObject<T>(json);
            }
        }
        catch (Exception ex)
        {
            Debug.LogException(ex);
        }
    }


    public override void Save()
    {
        try
        {
            string fn = Path.Combine(Application.persistentDataPath, "Save", _playerData.GetType().Name + ".json");

            if (!Directory.Exists(Path.GetDirectoryName(fn)))
                Directory.CreateDirectory(Path.GetDirectoryName(fn));

            string json = JsonConvert.SerializeObject(_playerData, Formatting.Indented);
            // Encrypt the json string here
            File.WriteAllText(fn, json);
        }
        catch (Exception ex)
        {
            Debug.LogException(ex);
        }
    }
}