In fact, Manchester City is still performing well in the Champions League at the moment even without Kevin de Bruyne and managed to win the match against Leipzig, who are the strongest rivals in Group G, even though they have experienced 2 defeats in the Premier League this is really a shame, but I am sure Pep Guardiola wont only relying on Kevin de Bruyne, he still has several other key players, but we also don't know to what extent Manchester City will be able to survive without Kevin de Bruyne, but what is clear at the moment is that even though Manchester City has not appeared completely consistent, what is clear is that Pep Guardiola will soon fix things midfield at the club to be able to improve Manchester City current performance.
Pep Guardiola definitely has a backup strategy in carrying out this season in the Champions League and Premier League so that Manchester City can continue to appear strong in all competitions even though key players like Kevin de Bruyne cannot play as hard as they are currently. I am quite sure that Manchester City will not be weak enough this season because Pep Guardiola has a way of placing substitutes in midfield in order to continue to have a better defense and attack line.
Just losing some a few points in the Premier League is not a reason for us to say Manchester City is not performing well anymore in this season.
Manchester City has a coach like Guardiola and he definitely has a good plan for an important tournament like the Champions League in which they want to win the title in this season.