2D Rigidbody Move with Button dont move.

I have writing this Script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.SceneManagement;
 using UnityEngine.UI;
 
 public class PlayerController : MonoBehaviour
 {
     public Rigidbody2D rb2D;
     
     public bool grounded = true;
 
     /*public Button moveLeftButton;
     public Button moveRightButton;
     public Button jumpButton;*/
 
     private void OnTriggerStay2D(Collider2D collision)
     {
         grounded = true;
     }
 
     private void OnTriggerEnter2D(Collider2D collision)
     {
         grounded = true;
     }
     private void OnTriggerExit2D(Collider2D collision)
     {
         grounded = false;
     }
 
     void Start()
     {
         
     }
     public List<RuntimeAnimatorController> skins;
 
     void Update()
     {
         rb2D.velocity = new Vector2(0, rb2D.velocity.y);
         
         if (Input.GetKey(KeyCode.RightArrow))
         {
             RightMove();
         }
         
         
         if (Input.GetKey(KeyCode.LeftArrow))
         {
             LeftMove();
         }
         
         if (Input.GetKeyDown(KeyCode.Space))
         {
             Jump();
         }
         
         if (transform.position.y < -8.85)
         {
             SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
         }
     }
 
     public void RightMove()
     {
         rb2D.velocity = new Vector2(10, rb2D.velocity.y);
 
     }
 
     public void LeftMove()
     {
         rb2D.velocity = new Vector2(-10, rb2D.velocity.y);
     }
 
     public void Jump()
     {
         if (grounded)
         {
             rb2D.AddForce(new Vector2(0, 600));
         }
     }
 
     /*public void ButtonMoves()
     {
         moveLeftButton.onClick.AddListener(LeftMove);
         moveRightButton.onClick.AddListener(RightMove);
         jumpButton.onClick.AddListener(Jump);
     }*/
 }

and access it to the button:

but it still doesnt works. Can anyone Helps with that?