Instantiate создаёт два объекта в unity 2D C#

 using System.Collections; 
using System.Collections.Generic; 
using UnityEngine; 
 
public class Plus : MonoBehaviour 
{ 
    public string plusname; 
    public GameObject ReadyBall; 
 
    void OnCollisionStay2D(Collision2D collision) 
    { 
        if (collision.gameObject.name == plusname) 
        { 
            Destroy(collision.gameObject); 
            Destroy(gameObject); 
            Instantiate(ReadyBall, (collision.gameObject.transform.position), Quaternion.identity); 
        } 
    } 
}