To detect the Player if he approches the enemy

Enemy.cs

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Enemy : MonoBehaviour
 {
     private Rigidbody2D rigidBodyComp;
     int i = 0;
     float initialPos,currentPos;
     private Vector2 dir = Vector2.left;
     private Animator anim;
     [SerializeField] private int speed;
     [SerializeField] private float leftEnd, RightEnd;
     [SerializeField] private Vector2 sizeLeft,sizeRight;
     [SerializeField] private LayerMask player;
     // Start is called before the first frame update
     void Start()
     {
         rigidBodyComp = GetComponent<Rigidbody2D>();
         initialPos = transform.position.x;
         currentPos = transform.position.x;
         anim = GetComponent<Animator>();
         Physics2D.queriesStartInColliders = false;
     }
 
        
     private void FixedUpdate()
     {
         transform.Translate(dir * speed * Time.deltaTime);
 
         if (transform.position.x >= RightEnd)
         {
             dir = Vector2.left;
             transform.localScale = sizeLeft;// new Vector2(-4f, 4.6f);
             RaycastHit2D hit = Physics2D.Raycast(transform.position, Vector2.left,50f,player);
             if(hit.collider != null) // && hit.collider.tag == "Player"
             { 
                
                 Debug.Log("Hitted !!!! " + hit.collider.gameObject.tag); // NOT HITTING PLAYER 
                 Debug.Log("Ray of "+gameObject.name+" Hits: " + hit.transform.name ); // NOT HITTING PLAYER 
             }
         }
         else if (transform.position.x <= leftEnd)
         {
             dir = Vector2.right;
             transform.localScale = sizeRight; // new Vector2(4f, 4.6f);
             RaycastHit2D hit = Physics2D.Raycast(transform.position, Vector2.right, 50f);
 
             if(hit.collider != null) // && hit.collider.tag == "Player"
             { 
                
                 Debug.Log("Hitted !!!! " + hit.collider.gameObject.tag);
                 Debug.Log("Ray of "+gameObject.name+" Hits: " + hit.transform.name );
             }
         }
 
       
     }
     private void OnTriggerEnter2D(Collider2D collision)
     {
         if (collision.tag == "Bullet")
         {
             anim.SetTrigger("die");
             
         }
     }
     
     private void Deactivate()
     {
         gameObject.SetActive(false);
         Debug.Log("dying");
     }
     
 }