does anyone here believe that next season a team other than bayern will be able to win the bundesliga? 
I don't believe that. lets we can see on all bet on sports bet site are put Bayern on the next 2023 title. Seems like the mission impossible for another club to shift Bayern's position even if it is Dortmund. But when we talk about 2nd position, of course, there is many clubs such as Leverkusen, Leipzig or Frankfurt. I'm more inclined to champion of UEFA cup, Frankfurt to fill up 2nd position, maybe can make surprise also in the champions league. Bundesliga has 5 clubs in the champions league.
and yes, it's true to fight for the top 4 positions next season may be a bit fierce because there are several teams that are starting to rise, one of which is Frankfurt. they are very confident this season because they entered the highest competition continent blue Champion League.