motion – Why is my character controller deacceleration not working? UNITY

I need my participant to deaccelerate when he cease not simply cease in place.
Right here is my code:

 public override Vector3 Transfer(MovementManager supervisor, Vector2 enter, bool bounce, bool isCrouching)
{
    float pace = isCrouching ? CrouchSpeed : MoveSpeed;
    Vector3 velocity = supervisor.Velocity;

    float currentVelocity = new Vector3(velocity.x, 0, velocity.z).magnitude;
    Vector3 moveDirection = Vector3.zero;

    if (Mathf.Abs(enter.x) > 0 || Mathf.Abs(enter.y) > 0)
    {
        moveDirection = new Vector3(enter.x, 0, enter.y);
        moveDirection = supervisor.rework.TransformDirection(moveDirection);

        if(enter.y > 0)
        moveDirection *= enter.y;

        LastMoveDirection = moveDirection;

        if (IsWalkSpeed) currentVelocity += (Acceleration * .4f) * Time.fixedDeltaTime;
        else currentVelocity += Acceleration * Time.fixedDeltaTime;

        //if (currentVelocity > MaxSpeed) currentVelocity = MaxSpeed;
        if (currentVelocity > pace) currentVelocity = pace;
        return moveDirection.normalized * currentVelocity * Time.fixedDeltaTime;
    }
    else
    {
        currentVelocity -= Deacceleration * Time.fixedDeltaTime;
        currentVelocity = Mathf.Max(currentVelocity, 0);

        return LastMoveDirection.normalized * currentVelocity * Time.fixedDeltaTime;
    }
}