Drag Object with Touching

I can move my objects with this code:

 using UnityEngine;
 using System.Collections;
 
 public class dragDrop : MonoBehaviour {
     
     void Update()
     {
         if (Input.touchCount == 1)
         {
             Vector3 wp = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
             Vector2 touchPos = new Vector2(wp.x, wp.y);
             Collider2D coll=this.gameObject.GetComponent<Collider2D>();
             if (coll == Physics2D.OverlapPoint(touchPos)&&Input.GetTouch(0).phase==TouchPhase.Moved)
             {
                 this.transform.position=touchPos;
                 
             }
             
         }
     }
 }

But the problem is when i move my finger faster object can't follow it.Any suggestions?