The UEFA Champions League is an extremely difficult competition in which the best four teams from each European league compete for the campaign championship. Bayern Munich is a challenging contender for the league title; they frequently lose a game. Perhaps during Julian Nagelsmann's administration at the Allianz Arena, the squad functioned effectively, but after bringing in Thomas Tuchel, the club began performing terribly. In his first season as Bayern Munich manager, Thomas Tuchel won the Bundesliga despite the club's terrible performance.
Thomas Tuchel was not entirely wrong in Bayern Munich's failure to appear in the Champions League, for a simple reason, Thomas Tuchel entered only to continue Nagelsmann legacy. That way there is no other choice for Tuchel to take advantage of the existing conditions rather than nothing. And after starting a new overhaul again, we can assess more objectively the good and bad results of Bayern Munich under Tuchel hands.
The main reason for Bayern Munich's elimination from the Champions League last season was their bad management decisions. They sacked their coach before a crucial Champions League match. They should have fired Nagelsmann at the end of the season. However, Thomas Tuchel has tried hard to stabilize Bayern Munich's performance. Players also need time to adapt to the new coach's match strategy. Bayern Munich were very lucky to win the title last season. However, Thomas Tuchel may be able to strengthen the Munich team next season. Because Tuchel is an experienced coach.