onpointerdown not working i just made a script for my cube to move left but its not moving i dint done anything just made this script and attached to the cube

this is the script

using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.EventSystems; using UnityEngine.UI;

public class LeftButton : MonoBehaviour { public bool TurnLeft = false;

 public GameObject Cube;

 public void OnPointerDown(PointerEventData eventData)
 {
     TurnLeft = true;

     Debug.Log("Clicked");
 }

 public void OnPointerUp(PointerEventData eventData)
 {
     TurnLeft = false;
 }

 // Start is called before the first frame update
 void Start()
 {
     
 }

 // Update is called once per frame
 void Update()
 {
     if (TurnLeft == true)
     {
         Cube.transform.Translate(Vector3.left * Time.deltaTime * 7);
     }
 }

}