when i click it click all objects in scene

Hi!So i do a game where every second spawn object and you need to click it, and my problem is when you click one object it click every object in scene. Here's code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine.UI;
 using UnityEngine;
 using System;
 
 public class click : MonoBehaviour
 {
     public static int score;
    
     public Sprite[] newsprite;
     public SpriteRenderer spriteRenderer;
 
     [SerializeField]private uint arraySpriteNumber=2;
     [SerializeField] private GameObject smokeDestroy;
     [SerializeField] private TextMesh scoreText;
 
     private void Start()
     {
         score = PlayerPrefs.GetInt("score");
 
         scoreText = GameObject.Find("smoketext").GetComponent<TextMesh>();
         
         spriteRenderer = gameObject.GetComponent<SpriteRenderer>();
 
         arraySpriteNumber = 2;
     }
 
     public void Update()
         
     {
 
         if (Input.GetMouseButtonDown(0)) isClicked();
 
         scoreText.text = score.ToString();
 
         if (arraySpriteNumber == 0)
         {
             PlayerPrefs.SetInt("score", score);
             PlayerPrefs.Save();
             
             Destroy(smokeDestroy);
         }
             
     }
 
     public void isClicked()
     {
         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
 
 
         RaycastHit2D hit = Physics2D.Raycast(ray.origin, ray.direction);
         if (hit.collider!=null)
         {
             
             score++; 
          
             arraySpriteNumber--;
             spriteRenderer.sprite = newsprite[arraySpriteNumber];
            
         }
     }
    
 }