Problem with Footstep System

Hey! I am working on a footstep system with checks the ground via raycast to see on what kind of material the player is standing on and therefore creating the according footsteps. The problem is with the timer, because the "left foot" and "right foot" lines are logged very rapidly (and therefore creating a very weird sound) and in general when looking at the timer, it does not look like it is changing at all. Anybody know why this would be?

Here is a minimised version of my script I am using (it's long, but not very advanced):

 public bool isCreeping = false;
 
 public bool rightStep;
 public bool leftStep;
 
 public float stepTimer = 0.0f;
 [HideInInspector] public float checkRange = 15.0f;
 public float stepTime = 5;
         
 public Transform rightFoot;
 public Transform leftFoot;
     
 //Checks if the player is in air
 public bool grounded = false;
 
 void Update () 
     {
     //If the player is moving    
     if(Input.GetAxis("Horizontal") != 0 || Input.GetAxis("Vertical") != 0)
         {
         //If the player is not creeping
         if(isCreeping == false)
             {
             //Make foot steps
             CheckGround();
             }
         }
 }
 
 public void CheckGround ()
     {
         RaycastHit hit;
         Debug.DrawRay(transform.position, Vector3.down , Color.red);
         //Check for colliders below the player
         if(Physics.Raycast(transform.position, Vector3.down, out hit ))
             {
             Vector3 LeftFootPos = leftFoot.position;
             Vector3 RightFootPos = rightFoot.position;
             string floortag = hit.collider.tag;
             //Play sound for the according floor (in this case Terrainisch things like grass or mud)
             if(floortag == "mudFloor")
                 {
                 //If the timer is below "stepTime"
                 if(stepTimer < stepTime)
                     {
                     //Add to it over time
                     stepTimer += 1 * Time.deltaTime;
                     //If it is over or equal to stepTime...
                     if(stepTimer >= stepTime)
                     Debug.Log ("Produce Step Sound");
                         {
                         //..and the player is on the left foot
                         if(leftStep == true)
                             {
                             //reset the timer
                             stepTimer = 0.0f;
                             //play the sound at the left foot position
                             NetworkedSounds.Instance.Client_GrassFootStep(LeftFootPos);
                             //the player is gonna walk on the right foot next, so disable left foot...
                             leftStep = false;
                             //and enable right foot
                             rightStep = true;
                             Debug.Log ("Left Step");
                             }
                         if(rightStep == true)
                             {
                             //same thing with the right foot
                             stepTimer = 0.0f;
                             NetworkedSounds.Instance.Client_GrassFootStep(RightFootPos);
                             rightStep = false;
                             leftStep = true;
                             Debug.Log("Right Step");
                             }
                         }
                     }
                 }
             }    
     if(grounded == false)
         {
         //reset the timer if the player happense to be in the air
         stepTimer = stepTime;
         }
     }