I know there is nothing wrong with the Bayern Munich players, but there are positions that need to be fixed. Bayern Munich performed like this last season, and they were only lucky to have won the Bundesliga title. Tauchle has already failed, which is why Bayern Munich is already looking for his replacement.
That may be true, but sticking to last season's performance is not enough for a team because they need to improve and get better season after season. The reason to realize is that when they are at the same level every season while other teams can improve it will also hurt them because at first they are at the top and then they have to be at the bottom. We can see that in the Bundesliga for example, yes maybe in terms of play and performance they are not too different from the previous season, and still it is a problem when Leverkusen can be better than them.
I will not say Thomas Tuchel failed, because after all they are still good enough it's just not enough to make them survive in a competition. In the Bundesliga itself they are still ranked 2nd and that's pretty good, the difference is Leverkusen who are indeed performing very extraordinary, they have recorded without defeat until now, it was never part of the previous prediction.
Bayern Munich's chance to stay in the Champions League is still wide open, it just depends on them in the second leg match later, whether they will be able to win or not.