How to find Gameobject with given coordinates

Hello I have been trying to find 3 objects in same column and blow them

with bad coding I'm stuck and I'm out of options how can I solve this problem what I did so far: Autogenerate hexatiles and placing select 3 of them end turn them

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Selector : MonoBehaviour
 {
     //public GameObject selector;
 
 
     GameObject arac, arac2, arac3, hafiza, hafiza1,hafiza2, hafiza3;
     public static Selector first,second,third;
     Auto_Generator generator;
     Vector2 firstPressPos, secondPressPos, currentSwipe;
    string rotation;
     Vector2 targrtloc;
 
     // Start is called before the first frame update
     void Start()
     {
         arac = GameObject.FindGameObjectWithTag("secici");
         arac2 = GameObject.FindGameObjectWithTag("secici2");
         arac3 = GameObject.FindGameObjectWithTag("secici3");
         hafiza = GameObject.FindGameObjectWithTag("ghost");
         hafiza.transform.position = new Vector2(-1.0f, -1.0f);
         arac.transform.position = new Vector2(-1.0f, -1.0f);
         arac2.transform.position = new Vector2(-1.0f, -1.0f);
         arac3.transform.position = new Vector2(-1.0f, -1.0f);
         first = null;
         second = null;
         third = null;
         generator = GameObject.Find("Generator").GetComponent<Auto_Generator>();
     }
     private void Update()
     {
         if (Input.GetMouseButtonDown(0))
         {
             firstPressPos = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
         }
         if (Input.GetMouseButtonUp(0))
         {
             secondPressPos = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
             currentSwipe = new Vector2(secondPressPos.x - firstPressPos.x, secondPressPos.y - firstPressPos.y);
             currentSwipe.Normalize();
             if (currentSwipe.x < 0 && currentSwipe.y > -0.5f && currentSwipe.y < 0.5f)
             {
                 checker(sonuclar.left);
                 dondur(sonuclar.left);
             }
             //swipe right
             if (currentSwipe.x > 0 && currentSwipe.y > -0.5f && currentSwipe.y < 0.5f)
             {
                 checker(sonuclar.right);
                 dondur(sonuclar.right);
             }
         }
     }
 
     private void OnMouseDown()
     {
         hafiza.transform.position = transform.position;
         Debug.Log(hafiza.transform.position);
 
         if (first == null)
         {
             arac.transform.position = transform.position;
             hafiza.transform.position = transform.position;
             first = this;
         }
         if (first != null && second == null && hafiza.transform.position != arac.transform.position)
         {
             var f1 = Mathf.Abs(arac.transform.position.y - hafiza.transform.position.y);
             var f2 = Mathf.Abs(arac.transform.position.x - hafiza.transform.position.x);
 
             if (f1 == 1f || f1 == 0.5f && f2 >= 0 && f2 <= 1)
             {
                 arac2.transform.position = hafiza.transform.position;
                 second = this;
                 first.targrtloc = second.transform.position;
             }
         }
         else if (second != null && arac.transform.position != hafiza.transform.position && arac2.transform.position != hafiza.transform.position)
         {
             var f3 = Mathf.Abs(arac2.transform.position.y - hafiza.transform.position.y);
             var f4 = Mathf.Abs(arac2.transform.position.x - hafiza.transform.position.x);
             if (f3 == 1f || f3 == 0.5f && f4 >= 0 && f4 <= 1)
             {
                 arac3.transform.position = transform.position;
                 third = this;
                 second.targrtloc = third.transform.position;
                 third.targrtloc = first.transform.position;
             }
         }
     }
 
     public void debug()
     {
         ress(sonuclar.debug);
     }
 
     void ress(sonuclar sonuclar)
     {
         if (sonuclar == sonuclar.debug)
         {
             first = null;
             second = null;
             third = null;
             arac.transform.position = new Vector2(-1, -1);
             arac2.transform.position = new Vector2(-1, -1);
             arac3.transform.position = new Vector2(-1, -1);
         }
         else
         {
             //first = null;
             //second = null;
             //third = null;
         }
     }
 
     void dondur (sonuclar sonuclar)
     {
         if (first != null && second != null && third != null )
         {
             if (sonuclar==sonuclar.right)
             {
                 first.transform.position = Vector2.Lerp(arac3.transform.position, arac3.transform.position, 0.00001f);
                 second.transform.position = Vector2.Lerp(arac.transform.position, arac.transform.position, 0.00001f);
                 third.transform.position = Vector2.Lerp(arac2.transform.position, arac2.transform.position, 0.00001f);
                 ress(sonuclar.normal);
             }
             else if (sonuclar == sonuclar.left)
             {
                 first.transform.position = Vector2.Lerp(arac2.transform.position, arac2.transform.position, 0.00001f);
                 second.transform.position = Vector2.Lerp(arac3.transform.position, arac3.transform.position, 0.00001f);
                 third.transform.position = Vector2.Lerp(arac.transform.position, arac.transform.position, 0.00001f);
                 ress(sonuclar.normal);
             }
         }
     }
 
     //GameObject.Destroy(gameObject);
     //generator.regenerate(transform.position.x,transform.position.y);
 
     void checker(sonuclar sonuclar)
     {
         if(sonuclar==sonuclar.left)
         {
           
         }
     }
 
     public enum sonuclar
     {
         debug,
         normal,
         left,
         right
     }
 }
 

/Generator Codes/

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Auto_Generator : MonoBehaviour
 {
     public GameObject[] objeler;
     GameObject game;
     public float width, height;
     // float Xoffset= 0.619f;
     float Yoffset = 0.5f;
     public static Auto_Generator first, second, third;
     int randomInt;
 
     void Start()
     {
         for (int y = 0; y < height; y++)
         {
             for (int x = 0; x < width; x++)
             {
                 randomInt = (Random.Range(0, objeler.Length));
                 game = Instantiate(objeler[randomInt]);
                 if (x % 2 == 0)
                 {
                     game.transform.position = new Vector2(x, y+0.5f);
                 }
                 else
                 {
                     game.transform.position = new Vector2(x, y );
                 }
             }
         }
     }
 
     public void regenerate(float x, float y)
     {
         Debug.Log("Silinen "+x+" "+y);
         game = Instantiate(objeler[randomInt]);
         game.transform.position = new Vector2(x, y);
     }
 }