Yes, if we look at it from this perspective, maybe you are right. Because the players are playing matches again without getting enough rest and they are catching up with form. Especially Real Madrid needs to play with each other a lot. Because the team is trying to adapt to each other with the new coach. The best way to do this is to play matches frequently. Real Madrid is doing very well right now, but I don't know if they can continue it.
The FIFA Club World Cup matches are like warm-up matches for Real Madrid. Real Madrid is not considering this title very seriously. However, Xabi is getting the opportunity to experiment with his squad in this tournament. To test the capabilities of the players. And in the last few matches we have seen Xabi conducting various experiments with this squad.
In the first two matches we saw Real Madrid playing in 4-3-3 formation. In the last two matches Madrid changed the formation. Madrid played in 3-5-2 formation. And in both matches Madrid's overall gameplay was excellent. Perhaps in this formation Xabi will build his match strategy next season.