Input.GetTouch isn't giving correct position

Hello , I am Moving my game object left and right within X-Y plane same like 2D shooter game. My gameObject get destroyed when it collides.

But collision occures when i write below code:

 var amttomove : float = Input.GetAxisRaw("Horizontal") * playerSpeed * Time.deltaTime ;
 transform.Translate(Vector3.right * amttomove);

When i move my game object By touch it does not collide.

 if (Input.touchCount > 0 && 
       Input.GetTouch(0).phase == TouchPhase.Moved) {
     
         // Get movement of the finger since last frame
         var touchDeltaPosition:Vector2 = Input.GetTouch(0).deltaPosition;
         
         // Move object across XY plane
         transform.Translate (touchDeltaPosition.x * playerSpeed * Time.deltaTime, 0 , 0);
     }

So what can be the reason? What should i do onTouch so that collision occure ?

Please help me.

Thanks to all of you for your support and help.