public IEnumerator UpdateRanking()
    {
        GameManager.Get().ActiveLoadingData();

        Task<DataSnapshot> getDataSnapShot = _databaseReference.Child("users").OrderByChild("score").GetValueAsync();

        yield return WaitTask(getDataSnapShot);

        DataSnapshot snapshot = getDataSnapShot.Result;

        // 모든 유저 데이터 받아오는 부분
        if (snapshot.ChildrenCount > 0)
        {
            SettingUserList(snapshot);
        }

        GameManager.Get().UnActiveLoadingData();

        yield return null;
    }