Even experienced coach Tuchel struggled to keep Bayern on top last season.
Tuchel is an accomplished manager, but he does not have the skills they need to coach Bayern Munich. He failed to be successful at Bayern Munich, a team where each coach goes and wins trophies repeatedly, while Tuchel comes and wins the trophy for his debut, I believe that if it hadn't been for Nagelsman, who developed the team, Bayern Munich would have gone trophyless under Tuchel.
The previous bad relationship between Kimmich and Tuchel was the main reason for Kimmich current difficult situation, when Tuchel was still coaching Bayern Muchen, Kimmich had asked management to sell him but instead this condition continues to this day where there is no clarity about Kimmich future in Munich, whether he will stay or whether he still wants to leave even though Tuchel is no longer coaching Munich, currently there are several teams who really want to recruit Kimmich from Munich considering that so far his performance has been quite consistent with Munich, Kimmich is one of Germany best defensive midfielders, and make he is a realistic target for the big European teams at the moment, Liverpool, Manchester City, Barcelona, Arsenal and PSG are the teams currently competing fiercely to get Kimmich signature, so Munich should be able to make it clear about what Kimmich wants at this time, because so far Kimmich still does not want to extend his contract in munchen which will expire in 2025.
A lot of people said there is a bad relationship between Kimmich and Tuchel, but if I'm not mistaken, Tuchel said personally that there are rumors about the problem with Kimmich, and I believe that statement he had, Tuchel wasn't having any issue with Kimmich, possibly the player wants to continue his career in other leagues because many clubs are interested in signing him, and he requested that the club should sell him due to his contract that will end next season, but the club refused. If the rumors regarding his bad relationship with Tuchel are true, I don't think Kimmich will leave the club again after Bayern Munich appoints Kompany as their new manager, he can extend his contract.
Tuchel is a good coach, it's not him who was wrong, it's Bayern's management who are wrong. Let’s look at the rest of the coaches:
1 - Real Madrid coach: this season Real Madrid won La Liga and the European Champions League. so everyone considers him a good coach, but in the last seasons under the command of the real madrid coach, they failed to win La Liga and the Champions League, but even so the management of real madrid did not fire the coach because real madrid has a management that thinks before acting, they know very well that not every season a team wins titles
2 - Manchester City coach: he has been at Manchester City for many years, during all the time he has been at Manchester City there have been years in which he did not win the Premier League and did not win the European Champions League and was not fired, because the management of manchester city uses their heads, they know that a team doesn't win all the time
3 - Liverpool, Arsenal: these are teams that had the same coach for many years, despite having some success and disappointments
Now Tuchel arrived at Bayern and managed to win the Bundesliga, but the following season when he didn't succeed he was fired, I honestly don't understand how this decision could be considered good, I don't see how Tuchel is wrong. In my opinion, Bayern's management made a big mistake by firing Tuchel and then hiring a new coach with no experience in the Bundesliga.
We can't compare Real Madrid's coach to Tuchel. Ancelotti's failure to win the La Liga and Champions League in the last two seasons does not make him a bad manager, he has won it four times for the club before adding another this season, so if Real Madrid considers firing him, they will have betrayed the best manager they will ever have, Real Madrid management believes he has won it previously, but the last two seasons were not in their favor, so they extended his contract, which will expire next season to 2026. However, I was only surprised when Chelsea fired Tuchel because he won the Champions League, which other managers were unable to do throughout their time at the club. We do not need to be worried about Kompany, he will deliver good results.
In addition, the coaches who managed the teams you mentioned in the previous season are among the best in the world, if they fail to win titles, they will not be fired. Arsenal, on the other hand, had the best manager, won their games, and challenged for the title. If they do not win a title, no one will blame their manager for their failure, because they have consistently failed to win a title, different from Bayern Munich, who win the Bundesliga title every season.