Scriptum/Assets/Scripts/SaveController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class SaveController : MonoBehaviour
{
    public void SaveScene()
    {
        string activeScene = SceneManager.GetActiveScene().name;
        PlayerPrefs.SetString("SceneSaved", activeScene);
    }

    public void LoadScene()
    {
        OnMapAppearanceMethod.Gateway = OnMapAppearanceMethodEnum.LoadGame;

        string sceneToGoTo = PlayerPrefs.GetString("SceneSaved");
        SceneManager.LoadScene(sceneToGoTo);
    }
    
    public void SaveHealth()
    {
        var player = GameObject.FindGameObjectWithTag("Player");
        player.GetComponent<Player>().SaveCheckpoint();
    }

    public void SaveItems()
    {
        SceneEquippableItemManager.Instance.SaveEquippableItems();
    }

    public void SaveQuests()
    {
        SceneTaskManager.Instance.SaveQuests();
    }
    
    public void SaveInventory()
    {
        SceneInventoryManager.Instance.SaveInventoryItems();
    }
}