unity, touch screen

ts.cs

using UnityEngine;
using UnityEngine.InputSystem;

public class BallHandler : MonoBehaviour
{
    private Camera mainCamera;
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
       mainCamera = Camera.main; 
    }

    // Update is called once per frame
    void Update()
    {
        if(!Touchscreen.current.primaryTouch.press.isPressed)
        {
            return;
        }
        Vector2 touchPos = Touchscreen.current.primaryTouch.position.ReadValue();
        Vector3 worldPos = mainCamera.ScreenToWorldPoint(touchPos);
        Debug.Log(touchPos);
        
        
        
    }
}