All those things go in waves. RM got an amazing team for some years. Then you struggle to replace them. Barcelona not exactly the same, but suddenly you are just taking poor decisions. Liverpool will do the same soon enough.
Liverpool have bought well lately as well, but still living off Salah, Mane, van Dijk and Allison. Guys like Fabinho, Jota etc have been great as well, but they are more human still. To find four special players like that so close to each other for a club like Liverpool happens once i a life time.
RM aren’t bad these days, but still fascinating how poor RM, Barcelona, Juventus, Man Utd etc are as a group right now. They will get back to the top again though.