private void Update()
    {
        //if all players are ready start the timer
        if (CheckForAllPlayersReady() && !Instance.IsTimerStarted)
        {
            Instance.StartTimer();
        }

        //if all players are not ready stop timer
        if (!CheckForAllPlayersReady() && Instance.IsTimerStarted)
        {
            Instance.StopTimer();
        }
    }