Manchester city will still feel dangerous despite losing several players this summer and Pep Guardiola need not be confused as his squad depth will remain the same for next season. Even if we look at the list of reserve players in Manchester City, there are still names like Phil Foden, Julian Alvarez and several other players who will help Manchester City to defend this title.
Manchester city's strength will not experience very significant changes and could even be almost the same as the previous season. Because I also think that what you said is true, especially after seeing a number of reserve players in Manchester city. It's clear that Manchester city will still be very strong next season as you said, both in the Premier League and in the Champions League.
Maybe Pep Guardiola also has to add more players, especially for the midfield because it is clear that this line needs the most regeneration at this time. Talking about Pep Guardiola's career, maybe there is no coach who can match his record of successfully bringing two different clubs to win the treble winner.
Players for midfield deserve to be added by Manchester City for next season, because the midfield is also a very important line for the team to strengthen. But if you talk about the successful record of a coach, there are still very many other coaches who are more successful than Pep Guardiola. You can search the data on the internet to see comparisons and records that have been inscribed by several coaches who are very well known in the world of football.