As long as Pep Guardiola's demands are met at the team he goes he is able to bring successes to that team most of the time. He has been managing only top teams maybe and we haven't seen him at a lower level team. Most probably we won't as well. However I still don't think this makes him a manager to have doubts about.
He is a very successful quality manager. He just needs a lot of money to build the kind of a team he would like.
He can find that kind of a budget at only rich teams as a result. He has finally achieved the Champions League title with Manchester City as well and achieved his main target too.
Guardiola level makes him deserve to be with a club that is able to facilitate all his desires to form a squad capable of competing in the title race, Guardiola has succeeded in doing so armed with the philosophy and tactics he uses to change the team's game according to his wishes. Lower level teams that want to bring in Guardiola will be seen as joking by football fans and observers, small teams might be able to bring in Guardiola by fulfilling his salary demands but they are unable to facilitate Guardiola with quality players.He is a very successful quality manager. He just needs a lot of money to build the kind of a team he would like.
He can find that kind of a budget at only rich teams as a result. He has finally achieved the Champions League title with Manchester City as well and achieved his main target too.Manchester City had brought in quality players before Guardiola came, the coaches who had handled Manchester City were always equipped with quality players but none of them were able to give the Champions League trophy to Manchester City. Only in the Guardiola Era were Manchester City able to achieve great success, just look at it like PSG who always bring in quality players, so far they have never been able to win the UCL trophy.
There is no guarantee that a squad filled with star players can win titles without the support of a great coach, and vice versa. However, Guardiola existence has given Manchester City a big advantage.