That is because many of Real Madrid's defenders are injured but I never doubt Real Madrid's management because they have proven that when going through a bad season, Real Madrid's management will make major improvements and that is possible to happen next season.
Now Real Madrid has officially recruited Xabi Alonso as their new coach, that is the first step in a major evaluation and most likely there will be many things that Xabi Alonso will fix, especially since Real Madrid's management never skimps on bringing in new players.
If you pay attention to the previous transfer market, Real Madrid itself did not take the opportunity to recruit the players needed even though we know from the beginning of the season they had problems in defense. Ancelotti was so sure he could solve the problem but in fact he failed because he did not have a number of players who could be used for important matches. The arrival of Xabi Alonso next season will be a turning point and Real Madrid needs to find a defender so that the team is much more solid and also congratulations to Barcelona who have become La Liga champions this season.