Imagine if Germany wins the Euro? Then it turns out that Kroos will retire having won La Liga + Champions League + German Super Cup + Euro in a season

This is what I understand about leaving at the peak! And although they say that Real asks him to stay, it seems to me that he will not change his decision since it does not look spontaneous, but planned several years ago.
Only some star players have the courage to decide to retire when they are at the peak of their careers. In my opinion, whether or not Germany succeeds in winning Euro 2024, Toni Kroos will not change his decision to retire. Real Madrid and German national team fans will feel the loss, Toni Kroos is a player who has the complete attributes to bring a team to success. Almost all managers who have coached Toni Kroos recognize the midfielder genius, the course of a match will be simpler when the ball is at his feet. His expertise in reading the opponent game, finding narrow gaps and providing assists, are some of its many advantages. If Toni Kroos wants to continue his career in a less competitive league like the Saudi Pro League or MLS, I think he can continue playing for the next two or three seasons.
Judging by the fact that Bayern sold him to Real Madrid easily (and cheaply) they didn't have a high opinion of him

Fans are unhappy that Kroos has decided to retire, but let's assume it's easy for him to bear. But I heard that in his family opinions were radically divided: the daughter was glad that dad would spend more time with the family, and the son was very upset that dad would no longer play football. Such is life - every action has both positive and negative consequences, I can imagine how difficult it is for lower-level football players to find a balance between work and family.