But Bayern managed to take the first place last season. Yes, Dortmund got the same number of points, but Bayern scored more goals and eventually won the Bundesliga. This kind of competition between Dortmund and Bayern happens regularly, so I wouldn't say Bayern are in some kind of crisis. It's just that this season has been difficult for all clubs.
I don't think it's still right to say that next season will be difficult for all clubs, because next season hasn't started yet so there's nothing more worthy to judge now. Even though according to predictions from some people there won't be easy things for every team next season, because they all have to be able to fight more consistently since the start of the season if they want to win in the Bundesliga and also in other championships.
In fact, the rivalry between Bayern Munich and Dortmund last season was a very tough competition and also, such competition is very rare. Although indeed, Bayern Munich and Dortmund have a long competition from season to season, but usually Bayern Munich has a wide point gap from Dortmund, but last season it was clearly very different because the decider also had to be determined in the last match. But for next season, I personally don't believe their competition will be as difficult as last season because after all, I'm pretty sure that Tuchel will be able to give a good result for Bayern Munich's from initial match next season.