That's why hired Thomas Tuchel, because of his experience in the champions league and they know a coach like Tuchel knows the way to make a team win the Champions League. On the other hand, Tuchel got a chance to have better teams than last season they are still hiring players like Kane for the next season which can increase their chances.
I also believe that next season Bayern Munich will be very different from last season, because Thomas Tuchel is trying to make the Bayern Munich team stronger than the previous season because Thomas Tuchel will make a more accurate proof next season where Bayern Munich is still a team to be reckoned with in the Champions League along with its domestic league as well. Player recruitment will continue this season and I also want to see if Bayern Munich can really get Kane.
Basically, I also believe that Tuchel has very good qualities and/or abilities, of course to be able to build Bayern Munich even better, especially for the Champions League. But somehow, after Tuchel failure in his final days at Chelsea at that time, it made me feel seems Tuchel maybe had a certain amount of time to be able to make the team really good. At least, this factor is a big difference with the qualities possessed by Pep Guardiola and maybe also Klopp. But yes, hopefully Tuchel can provide very good results for Bayern Munich in the Champions League next season, and of course that is Bayern Munich main target in appointing Tuchel.