Rigidbody controller counter movement

Basically I'm doing a FPS controller with a rigidbody, since I want the movement to have physics involved. But I'm kind of a noob and I am not able to add some counter movement so when the player is on the ground, they can controll themselves better and not slide around everywhere. This is what I currently have: #region Variables //Camera public CameraMovement camera;

     //Movement
     public int speed = 20;
     public int maxSpeed = 20;
     public int slowDownFactor = 10;
     private float hMovement;
     private float vMovement;
     private Vector2 movement;
     private Vector2 prevMovement;
     private bool jumping;
 
     //Jumping
     public int jumpForce = 10;
     public int extraGravity = 10;
 
     //Player
     private Rigidbody player;
     private CapsuleCollider collider;
 
     #endregion
 
     #region Unity Callbacks
     // Start is called before the first frame update
     void Start()
     {
         player = GetComponent<Rigidbody>();
         collider = GetComponent<CapsuleCollider>();
     }
 
     // Update is called once per frame
     void FixedUpdate()
     {
         Movement();
         //CounterMovement();
         Rotate();
 
         if (Input.GetKeyDown(KeyCode.Q)) Debug.Log(Grounded());
     }
     #endregion
 
     #region My methods
 
     //The player movement
     private void Movement()
     {
         //Gets the input
         hMovement = Input.GetAxisRaw("Horizontal");
         vMovement = Input.GetAxisRaw("Vertical");
 
         movement = new Vector2(hMovement, vMovement);
 
         //Jumping
         jumping = Input.GetButton("Jump");
 
         //If the movement is more than the maximum, cancel out the input(x)
         if (player.velocity.x > maxSpeed && hMovement > 0) hMovement = 0;
         if (player.velocity.x < -maxSpeed && hMovement < 0) hMovement = 0;
 
 
         //If the movement is more than the maximum, cancel out the input(z)
         if (player.velocity.z > maxSpeed && vMovement > 0) vMovement = 0;
         if (player.velocity.z < -maxSpeed && vMovement < 0) vMovement = 0;
 
         //Jumping
         if (jumping && Grounded())
         {
             player.AddForce(new Vector3(0, jumpForce, 0), ForceMode.Impulse);
         }
 
         //Adds the force to the rigidbody
         player.AddForce(hMovement * transform.right * Time.deltaTime * speed, ForceMode.Impulse);
         player.AddForce(vMovement * transform.forward * Time.deltaTime * speed, ForceMode.Impulse);
 
         //Extra gravity
         player.AddForce(new Vector3(0, -extraGravity, 0));
     }
 
     //The counter movement, to avoid sloppy movement
     private void CounterMovement()
     {
         Vector3 counterMovement = new Vector3(-player.velocity.x, 0, -player.velocity.z);
 
         if ((prevMovement.x != movement.x || prevMovement.y != movement.y) && Grounded())
         {
             
             //Add some counter movement if the player has stopped pressing a movement key, or pressed a new one
             player.AddForce(counterMovement * 40);
             prevMovement = movement;
         }
 
     }
 
 
     //Rotates the player on the y with the mouse
     private void Rotate()
     {
         transform.rotation = camera.playerRotation;
     }
 
     //Determins if the player is grounded
     private bool Grounded()
     {
         return Physics.Raycast(transform.position, Vector3.down, collider.bounds.extents.y + .1f);
     }
 
     #endregion

I've been stuck on this for a long time, so I finally decided to ask for help. Thanks in advance.