If only Kompnay will be given the time that he needs to put the club back in their best form so that they can start winning Bundesliga again. I don't expect much from him this season because he is new and needs to understand the players capacity before he can make them blend to his own game tactics.
The fans might be expecting too much from him and they will feel that it will be very easy for him to start winning trophies immediately because they are used to winning and that is why the problem lies. Kompany might do great in Bayern as a coach because he has all the resources available.
You are correct, Bayern Munich must be patient with Kompany in his first season to get everything together, as they performed badly last season. Kompany had little experience managing a top club because, if am not mistaken, none of the clubs he had previously managed has ever participated in the Champions League. Kompany will face many challenges next season, which includes participation in the next Champions League and a battle with Bayer Leverkusen, which made the Bundesliga much more difficult to win last season. However, fans and management will have big hopes for Kompany next season because last season was the only one that they did not win a trophy in eleven seasons, I believe that Tuchel was sacked because he failed to win a trophy.
However, with patience, I believe Kompany will be the perfect manager for Bayern Munich, the management should not put any pressure on him because many people have started doubting his ability to build the team, they shouldn't expect too much next season, but he will surely put this team in good shape in the next two to three seasons.