Player should turn in the direction the player is running. (2D Game)

Hey, Does anyone know what I did wrong with this script? Can anyone help me?

using UnityEngine;

 public class PlayerMovement : MonoBehaviour
 {
      [SerializeField] private float speed;
      private Rigidbody2D body;
 
      private void Awake()
     {
           body = GetComponent<Rigidbody2D>();
 
     }
 
     private void Update()
     {
        
 
         float horizontalInput = Input.GetAxis("Horizontal");
         body.velocity = new Vector2(horizontalInput * speed, body.velocity.y);
 
 
         //Dreht den Spieler 
         if (horizontalInput > 0,01f)
         {
             transform.localScale = Vector3.one;
         }
             
         else if (horizontalInput < 0,01f) 
         {
             transform.localScale = new Vector3(-1, 1, 1);
         }
             
 
         if (Input.GetKey(KeyCode.Space))
         {
             body.velocity = new Vector2(body.velocity.x, speed);
         }
             
 
 
     }