OnPointerDown and OnPointerUp not working

I'm working on my first game ever (first of many :D). I'm targeting the android platform. I have managed to put together the basic mechanism of the game. For the input I'm using a simple UI image as a button to rotate constantly, while holding the button, the player to left relatively to Space.World. I used a Debug.Log and it seems to print my messages on the console but however it doesn't change the status of a boolean variable in order to trigger the rotation. Please help me I'm really stuck for more than two days now. I know it's probably so easy but I'm a total rookie.

Here is my code:

Player Script:

 using UnityEngine;
 
 public class Player : MonoBehaviour
 {
     private float _turnSpeed = 150f;
 
     private bool _turnLeft;
 
     private void FixedUpdate()
     {
         TurnLeft(_turnLeft);
     }
 
     private void OnCollisionEnter()
     {
         Destroy(gameObject);
     }
 
     private void TurnLeft(bool turn)
     {
         if (turn)
         {
             transform.Rotate(-Vector3.up * _turnSpeed * Time.deltaTime, Space.World);
         }
     }
 
     public void OnClicked()
     {
         _turnLeft = true;
     }
 
     public void OnReleased()
     {
         _turnLeft = false;
     }
 }
 

Button Script:

 using UnityEngine;
 using UnityEngine.EventSystems;
 
 public class Button : MonoBehaviour, IPointerDownHandler, IPointerUpHandler
 {
     [SerializeField] private Player _car;
 
     public void OnPointerDown(PointerEventData eventData)
     {
         _car.OnClicked();
         Debug.Log("I'm clicked");
     }
 
     public void OnPointerUp(PointerEventData eventData)
     {
         _car.OnReleased();
         Debug.Log("I'm released");
     }
 }
 

Spawner Script:

 using UnityEngine;
 
 public class Spawner : MonoBehaviour
 {
     [SerializeField] private Player _car;
 
     private Player _spawn;
 
     private Vector3 _instantiatePosistion;
     private Quaternion _instantiateRotation;
 
     private void Start()
     {
         _instantiatePosistion = _car.transform.position;
         _instantiateRotation = _car.transform.rotation;
     }
 
     private void Update()
     {
         if (_spawn != null) return;
         _spawn = Instantiate(_car, _instantiatePosistion, _instantiateRotation);
     }
 }