Just because Modric and Kroos retire or leave Real Madrid, it doesn't mean that Real Madrid's midfield will become weak. It's funny if you come to that conclusion because, after all, Real Madrid still have other players who are also young and thus, I believe the Real Madrid squad will remain good and fine from season to season. Therefore, it is not surprising that Real Madrid is always the favorite team to get the trophy. But indeed, even so, ofcourse, Real Madrid is also still possible to fail but basically, Real Madrid always has a chance to get trophies in all competitions every season.
Currently Madrid only has Modric left in their midfield as an experienced player after Kroos announced his retirement, although Madrid midfield still has many good and young players in the midfield, we also cannot deny that they still need experienced players to support every line which Madrid is dominated by young players. Of course, we cannot doubt that they have experience and a strong enough mentality in competing in La Liga and also the Champions League so far, so they really deserve to continue to be favorites as one of the strong championship candidates in every competition they have participated, so far Ancelotti has done a good job at Madrid so we can see how Madrid has a pretty good team balance.
The competition next season will of course be more competitive because every season the teams competing in the Champions League always improve and reshuffle their teams, so like it or not, Madrid also has to be wary of the rise of rival teams to be able to maintain their status as champions remaining in the defense Champions League next season, Madrid does have a complex team balance but is still trying to bring in several new players at this time in order to maintain their dominance in the league and Champions League.