I would argue the increase in games has had an accumulation effect on players though, so if there was a break in the last few years things wouldn't be so bad. Since covid and the winter world cup, we've had the nation's league replace friendlies and we've got expanded champions league and now a club world cup at the end of the season making it worse.
We've easily got the smallest squad out of our rivals in the league, and went into an extended season with one aging rb, no natural lb, one dm who has been complaining about the number of games he's playing, and one striker. Going forward the club and Pep are going to have to change things, else even if we sign some new players we are going to be in the same situation next year. We can't sign a new rb to replace Walker and have them play in 70 + games a season and expect them not to get injured.
We can't sign players like Doku who have had injury issues before with such a small squad. We can't carry people like McAtee who the manager doesn't deem good enough to play more than 2 minutes in the league. We can't refuse to use any academy players other than Lewis, even if it just to round out the squad, or not use a lot of subs when we can see the team are out on their feet. Ake, stones, walker, gundo and bernardo are not going to be fitter next year after this season, and we have no rest with the club world cup. Something has got to give.