I am also a fan of Manchester City and what you say is true that the Champions League is difficult to dominate and if we remember again how Haaland is also favored as a reliable player who is a very great scorer and last season Manchester City also managed to win the Champion League title which can be proof that other clubs can also become strong clubs even though Real Madrid has Mbappe but that is not a guarantee.
If we remember again how Manchester City performed in the quarter-finals yesterday, there was only a very narrow difference in score, but Real Madrid could be superior by 1 score and that is also proof that Manchester City is still the strongest opponent for Real Madrid as long as Manchester still has Haaland, everything will just fine.
Until now there has been no confirmation that Pep Guardiola will replace his main players and it is possible that there will only be slight changes to several main players but not to the attack line which is already neatly arranged.
Pep Guardiola is still very enthusiastic about winning the champions league title again after having gained experience at that time, making this coach have great enthusiasm even though he has failed but will not reduce Pep Guardiola's confidence.
Even though it is unlikely that Real Madrid will experience a decline in performance, there are still other teams that have the same strong performance that might be able to match Real Madrid. To be honest, I hope there is another team that is able to match Real Madrid next season, such as perhaps Manchester City which is indeed can be said to be able to match Real Madrid's performance. I can't imagine if Manchester City loses Haalan and other star players, as well as their coach, who if they change will either make Manchester City still have a strong performance or experience a decline.
I was a little surprised by Pep Guardiola, who yesterday won the title in the EPL, saying he was bored and wanted to look for a new challenge, so there were rumors that he would leave Manchester City and could be followed by Haaland, who would indeed take part in the news, of course. If that happens, there is a possibility, in my opinion, that Manchester City will experience difficulties which might affect their performance. I hope Manchester City can win the Champions title next season, even though it seems difficult because the competition in the Champions League is tough competition, but if Manchester City is confident, maybe they can win the Champions League title next season.