European clubs are complaining that there are too many games per season. In my opinion, the problem is that they want to play every game with the same players. The squads need to get bigger and give more players opportunities. If they really start rotating more players in games, there won't be this generalized fatigue.
Clubs need to have 11 players + 7 substitutes. These are players who cost the club a lot of money. If they had a B team with 11 players + 7 substitutes, then the club would go bankrupt, and no player would accept going to the B team, so the players in the B team would be the least skilled players.
The one who is wrong is FIFA, which keeps inventing so many competitions, such as the Nations League, when it knows that in the European leagues there are many cups and there are also league games. For example, in England, they have the Premier League, the FA Cup, and then there are more cups and the teams must also play in the European Champions League or the Europa League or the Conference League.
And when it's holiday time, FIFA invents this competition, the players need to rest.
This competition pays well
https://www.fifa.com/en/tournaments/mens/club-world-cup/usa-2025/articles/record-prize-money-solidaritybut it would benefit the Latin American teams that had more rest time