To be honest, Real Madrid was really unlucky during this season because they lost many players and got injured a lot, but they still had good performances. However, they have good enough players to fill the places of these players in the team. Recently, they lost Éder Militão, their Brazilian dancer, which can have a negative effect on this team because this player had a key role in Real Madrid.
In the game against Osasuna, Éder Militão got injured hard which even made Vini Jr very unhappy because he saw Militão's injury as hard enough.
It seems Militão is going to be out for nine months.
And the biggest problem now is the lack of Center back options. Alaba happens to be another quality center back, but he is currently injured as well. It is going to be a difficult thing for Ancelotti to manage, except he can trust some other players that plays in other positions to do the job. 9months is a very long time to wait, or maybe Alaba might make a quick return than we expected, or they might get involved in the January transfer window as well.