Unity MonoSingleton

using UnityEngine;
public class MonoSingleton<T> : MonoBehaviour where T : MonoBehaviour
{
    private static T instance;
    public static T Instance
    {
        get
        {
            if (instance == null)
            {
                //  Find existing instances 
                instance = (T)FindObjectOfType(typeof(T));

                //  If there is no instance , Create 
                if (instance == null)
                {
                    //  You need to create a GameObject , Then mount the singleton component to the game object 
                    var singletonObject = new GameObject();
                    instance = singletonObject.AddComponent<T>();
                    singletonObject.name = typeof(T).ToString() + " (Singleton)";

                    //  Let the instance not be destroyed when switching scenes 
                    DontDestroyOnLoad(singletonObject);
                }
            }

            return instance;
        }
    }
}