Let's also not forget that last season at the beginning of the season they played well only towards the middle of the season and towards the end of their performance deteriorated so seeing things like this could not this also be one of the possibilities that happened.
Their mentality is good I'm aware of that but when they can't maintain consistency with a lot of schedules (like last season) then the worst possibility of last season is also repeated.
Of course, this competition does not only run in one or two games. But it will take a long time and many games will be passed. Last season there were some injury problems and the age of the Madrid players is quite old. Anceloti has realised that and they are starting to regenerate. Just look at new names like Bellingham and Guler. But the bad thing is that some of their best players are currently suffering from severe injuries and long breaks.
This must be considered by Ancelotti because at this time as you say Arda Guller who is predicted as a young player who has good progress must rest a little longer fortunately Jude is indeed Madrid's best purchase so far because of his fast adaptation and his performance is increasing in Madrid he is now one of the coveted players of Madrid fans.
Ancelotti must try to maintain consistency where now they still don't have a busy match because other competitions have not started so they must maintain consistency especially with the capital of 3 consecutive wins before.