If he went to Man Utd, he would still be shit. The thing is, City, Pool etc. are motivating clubs to play for, just because like in army, it might feel shit sometimes but because you’re an unit and you feel like not letting your squad members down. Pep and Klopp are demanding same stuff, they’re great at motivating the players and making them feel like they’re part of the big picture.
It’s the daily stuff you do as a club, from facilities, food, group dynamics, coaches, club directors, physios etc. It’s more like believing into it and seeing people around believing into it as well. You definitely don’t want to be the only one slipping around, but once the culture isn’t there and clubs are accepting less than 100%.
If you looked Barca for many years, Man Utd or even us, our players just came to collect the paycheck. Could add multiple big clubs to there and it’s always like that. Cancelo will do great if athmosphere is right, but will collapse if people around him are giving just 50%.