foot step sound

I want when my Character Controller is playing I want trigger the audio source to play the foot step sound and stop when not playing

this the code I have but its not triggering the sound, no error codes but no sound ether

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class footstep : MonoBehaviour
 {
     CharacterController cc;
 
     void Start ()
     {
         cc = GetComponent<CharacterController>();
     }
 
     void Update()
     {
         if(cc.isGrounded == true && cc.velocity.magnitude > 2f && GetComponent<AudioSource>().isPlaying == false)
         {
             GetComponent<AudioSource>().volume = Random.Range(0.8f, 1);
             GetComponent<AudioSource>().pitch = Random.Range(0.8f, 1.1f);
             GetComponent<AudioSource>().Play();
         }
     }
 }