You are right. The only team favorite in the Bundesliga is Bayern Munich. Teams like Dortmund, Leipzig, and Leverkusen will not fight for the title. Dortmund has sold Haaland, the best player in their squad. And Bayern Munich is much stronger than all the other teams. And so all the other Bundesliga teams will be far behind Bayern Munich in the title race.
It is definitely true that the big favorite to win the Bundesliga next year will be of course Bayern Munich again. They just have the strongest squad of players of all the Bundesliga clubs it is as simple as that. That doesn't mean though that it is impossible for the other teams to snatch away a Bundesliga title from time to time from Bayern. The more consecutive titles that Bayern has already won the higher the chance that another club will be successful in the next season, that is just simple maths.
For me the biggest chances to beat Bayern has Leipzig. For me they have a very good mix of players in their team and if they are able to hold Nkunku for another season and also have a good start then maybe they can really challenge Bayern for the title. I don't think that Dortmund will be strong enough to do that.