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