Inaccurate touch detection from the base class

Hey, I'm trying to get an info if a touch to the mobile screen is colliding with the specific game object. If I attach this script to the object itself, everything works fine.

But, I want to make it a part of the base class, so I don't have to write this for every object in the game. However, when I make this script inherited, touch shows that game object is everything except the game object.

What can be the reason and how to fix it?

 public abstract class ArchMage : MonoBehaviour
 {
     [SerializeField]
     private GameObject mageObject;
 
     private Collider2D collMage;
     
     // Start is called before the first frame update
     void Start()
     {
         collMage = mageObject.GetComponent<Collider2D>();
     }
 
     // Update is called once per frame
     protected virtual void Update()
     {
         CheckIfTouched();
     }
 
     void CheckIfTouched()
     {
         if (Input.touchCount > 0)
         {
             Touch touch = Input.GetTouch(0);
             Vector2 touchPosition = Camera.main.ScreenToWorldPoint(touch.position);
 
             //TESTING. Draw line to touch from the center
             Debug.DrawLine(Vector2.zero, touchPosition, Color.red);
 
             if (touch.phase == TouchPhase.Began)
             {
                 Collider2D touchedCollider = Physics2D.OverlapPoint(touchPosition);
 
                 if (touchedCollider == collMage)
                 {
                     Debug.Log("HIT");
 
                 }
             }
         }
     }
 }