Bayern Munich management will not allow what happened to them last season to repeat itself shortly, so they will sign players that will help them get back to their glory days. So I agree with you that Bayern Munich will be a serious contender to win the UEFA Champions League trophy when it starts next season. It is a pity that Harry Kane joined Bayern Munich at a bad time. Harry Kane put in his best and scored goals for Bayern Munich to win a trophy last season, but Bayern Munich's team spirit was low, which made them not win any trophy last season.
Bayern Munich would had been a top contender for me but they do not have a manager that we can depend on to challenge Real Madrid and Manchester city, Bayern Munich have very good players and a top striker but they can not win, I do not think they will be able to win their league in the first place because other teams will use the opportunity of Bayern Munich having a new manager that is yet to understand the team and the league to play very well so they can win the league. I do not think Bayern Munich made the right choice of hiring Vincent Kompany as their manager. There are better managers without a job that they could have hired and they will be favourites to win. Real Madrid with mbappe is going to be untouchable and they are going to defend their championship league again.
Bayern Munich changing managers every season can definitely consider it a bad decision for them. Real Madrid Manchester City are successful because they have brought experienced managers to their club on long term contracts and the team is being managed under that manager. If Real Madrid or Manchester City changed managers every season I think it would be difficult for them to succeed here as well. Everyone has been a manager in their own capacity so everyone's strategy must be different.
Every season a new manager will come to the club and he will apply his tactics and it will be seen that the players are not getting the right tactics. If Bayern Munich are to do well next season they must first hire a quality manager and if they are successful here they will be successful in performance.