Unity App Manager Singleton

AppManager.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Net;
using System.Linq;
using UnityEngine;


namespace Arlane
{
    public class AppManager : MonoBehaviour
    {
    
        public static AppManager instance = null;

        void Awake()
        {
            if ( instance == null )
            {
                instance = this;
            }else if(instance != this)
            {
                Destroy(gameObject);
            }

            DontDestroyOnLoad(gameObject);
        }

        // Use this for initialization
        void Start()
        {
  
        }

        // Update is called once per frame
        void Update()
        {
            
        }

}