Enemy AI movement Problems

Firstly this is my first post so I apologise if some things don't work/aren't clear. I have been working through a course to make a 2d platformer in unity. One of the scripts doesn't work as it should and I have checked it multiple times against theirs. I have also made some modifications to it to try to get it to work.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class EnemySkeleton : MonoBehaviour
 {
     private Rigidbody2D MyBody;
 
 
     [Header("Movement")]
     public float moveSpeed;
     private float minX, maxX;
     public float distance;
     public int dir;
 
     private bool detect;
 
     private Transform playerPos;
     private Animator anim;
     // Start is called before the first frame update
 
     [Header("Attack")]
     public Transform attackPos;
     public float attackRange, attackDir;
     public LayerMask PlayerLayer;
     public int damage;
     public AudioClip axeSwing;
 
     void Start()
     {
         anim = GetComponent<Animator>();
         playerPos = GameObject.Find("Assassin").transform;
         MyBody = GetComponent<Rigidbody2D>();
 
         maxX = transform.position.x + (distance / 2);
         minX = maxX - distance;
     }
 
     // Update is called once per frame
     void Update()
     {
         if (Vector3.Distance(transform.position, playerPos.position) <= 1.5f)
         {
             DetectandAttack();
         }
         else
         {
             Patrol();
         }
         Death();
 
         if (MyBody.velocity.x > 0)
         {
             transform.localScale = new Vector2(1.3f, transform.localScale.y);
             anim.SetBool("Attack", false);
         }
         else if (MyBody.velocity.x < 0)
         {
             transform.localScale = new Vector2(-1.3f, transform.localScale.y);
         }
 
     }
     void DetectandAttack()
     {
         if (Vector2.Distance(playerPos.position, transform.position) >= 0.25f)
         {
             Vector3 PlayerDir = (playerPos.position - transform.position).normalized;
             if (!detect)
             {
                 attackDir = 1f * PlayerDir.x;
                 transform.localScale = new Vector2(1.3f * attackDir, transform.localScale.y);
                 detect = true;
                 anim.SetTrigger("Detect");
             }
             if (anim.GetCurrentAnimatorStateInfo(0).IsName("SkeletonDetect"))
             {
                 return;
             }
 
             if (PlayerDir.x > 0)
             {
                 MyBody.velocity = new Vector2(moveSpeed + 0.4f, MyBody.velocity.y);
             }
             else
             {
                 MyBody.velocity = new Vector2(-(moveSpeed + 0.4f), MyBody.velocity.y);
             }
 
         }
         else if (Vector2.Distance(playerPos.position, transform.position) <= 0.25f)
         {
             MyBody.velocity = new Vector2(0, MyBody.velocity.y);
             anim.SetBool("Attack", true);
         }
     }
     void Patrol()
     {
         detect = false;
         switch (dir)
         {
             case -1:
                 if (transform.position.x > minX)
                 {
                     MyBody.velocity = new Vector2(-moveSpeed, MyBody.velocity.y);
                 }
                 else
                 {
                     dir = 1;
                 }
                 break;
             case 1:
                 if (transform.position.x < maxX)
                 {
                     MyBody.velocity = new Vector2(moveSpeed, MyBody.velocity.y);
                 }
                 else
                 {
                     dir = -1;
                 }
                 break;
         }
     }
     void Death()
     {
         if (anim.GetBool("Death"))
         {
             MyBody.velocity = Vector2.zero;
             GetComponent<Collider2D>().enabled = false;
             MyBody.isKinematic = true;
             anim.SetBool("Attack", false);
             return;
         }
     }
     public void Attack()
     {
         SoundManager.instance.PlaySoundFx(axeSwing, .2f);
 
         Collider2D attackPlayer = Physics2D.OverlapCircle(attackPos.position, attackRange, PlayerLayer);
         if (attackPlayer != null)
         {
             if (attackPlayer.tag == "Player")
             {
                 attackPlayer.gameObject.GetComponent<PlayerHealth>().TakeDamage(damage);
             }
         }
     }
     private void OnDrawGizmosSelected()
     {
         Gizmos.color = Color.red;
         Gizmos.DrawWireSphere(attackPos.position, attackRange);
     }
     void Flip()
     {
         Vector3 theScale = transform.localScale;
         theScale.x *= -1;
         transform.localScale = theScale;
     }
 }

Not sure if anyone can make any sense of it. Basically I want the enemy to:

1. Patrol a certain distance(currently works).

2. detect player, play detect animation whilst remaining stationary(sort of works).

3. run towards player and attack

4. remain stationary while attacking and remain in the original orientation without flipping mid attack.

This is my attempt at uploading a video of what is currently happening. [1]: /storage/temp/152805-firstplatformer-testscene-pc-mac-linux-standalone.zip

I think there is a problem with how the local scale is set as it depends on velocity, and when the enemy attacks its velocity is set to zero. I would really appreciate anyone's help on this, its almost certainly a small fix or me being silly! Sorry its such a mess!