Unity 2d edit a scrip.

Hello everyone and can modify this script? This script is attached to the player. When I move the mouse cursor to the right or left, the player follows the 2D cursor. Everything is right, however, change the rotation of players. I would like to change this script by rotation localScale. You can modify this script? Thank you

 using UnityEngine;
 using System.Collections;
 
 public class PlayerGuardaMano1 : MonoBehaviour {
 
     public Transform player;  
     public Transform self; // object you want to face the player on x axis only
     
         
     void Update () 
     { if (player.transform.position.x <= self.transform.position.x) //players spot in world space as opposed to enemy "self" spot 
         { self.transform.localScale = new Quaternion(0,0,0,0);// flips enemy around to face the player on x axis only 
         } 
         else
             if (player.transform.position.x >= self.transform.position.x)//players spot in world space as opposed to enemy "self" spot 
         { 
             self.transform.rotation = new Quaternion(0,180,0,0);// flips enemy around to face the player on x axis only 
             
         }
         
     }
 }