slowdown implimentation

slowdown.cs

private bool _isSlowDownActive = false;
[SerializeField]
private GameObject _slowDown;
[SerializeField]
AudioSource _slowDownSound;
private WaitForSeconds _fiveSecondsYieldTime = new WaitForSeconds(5.0f);
private WaitForSeconds _twoSecondsYieldTime = new WaitForSeconds(2.0f);

void CalculateMovement()
    {
    float horizontalInput = Input.GetAxis("Horizontal");
    float verticalInput = Input.GetAxis("Vertical");

    Vector3 direction = new Vector3(horizontalInput, verticalInput, 0);

    if (_isSpeedUpActive || _isBoostActive)
    {
        transform.Translate(direction * (_speed * _speedMultiplier * Time.deltaTime));
    }
    else if(_isSlowDownActive)
    {
        transform.Translate(direction * (_speed * Time.deltaTime / _speedMultiplier));
    }
    else
    {
        transform.Translate(direction * (_speed * Time.deltaTime));

    }

public void SlowDown()
{
    _isSlowDownActive = true;
    _slowDownSound.Play();
    _slowDown.SetActive(true);
    StartCoroutine(TurnOffSlowDown());
}
IEnumerator TurnOffSlowDown()
{

    yield return _fiveSecondsYieldTime;
    _isSlowDownActive = false;
    _slowDown.SetActive(false);
        
        
    }