How to destroy the clone that I click on Unity 2D

I am trying to instantiate multiple clones of an object, and when I click on one of the clones, that specific clone is destroyed. I am able to instantiate one clone and then click on that clone and then it destroys just fine, but the issue comes when their are multiple clones being instantiated.

Here is my code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class cloneTesting : MonoBehaviour
 {
     public GameObject sphere;
     private GameObject cloneSphere;
     private CircleCollider2D collider;
 
 
     // Start is called before the first frame update
     void Start()
     {
         collider = GetComponent<CircleCollider2D>();
     }
 
     // Update is called once per frame
     void Update()
     {
         if (Input.GetKeyDown(KeyCode.Space))
         {
             cloneSphere = Instantiate(sphere, new Vector3(0.04f, 4f, 0f), transform.rotation);
         }
 
         if(Input.GetMouseButton(0))
         {
             checkClick(getClickPosition());
         }
     }
 
     //Gets the position the click
     private Vector3 getClickPosition()
     {
         Vector3 clickPos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
         clickPos.z = 0f;
 
         return clickPos;
     }
 
     //Checks the position of the click and destroys the clone if the clone is clicked on
     private void checkClick(Vector3 clickPos)
     {
         if (collider != Physics2D.OverlapPoint(clickPos))
         {
             Debug.Log("HIT!");
             Destroy(cloneSphere);
         }
         else
         {
             Debug.Log("MISS");
         }
     }
 }

I understand why its not working the way that I did it, but I don't know any other way to instantiate multiple clones, and destroy the one that I click on. Thanks