Bayern Munich is indeed at a much better level, and they also have a number of players capable of making the league even more competitive, making it difficult for other teams to break their dominance. The quality of the players Bayern Munich has is above average compared to other clubs, making Bayern Munich the only one with a strong squad. It's hard to understand why Leverkusen chose Ten Hag as Xabi Alonso's replacement, given that they saw Ten Hag's abilities during his time as Manchester United manager. It was a bad decision for Leverkusen, although they have now ended their partnership with the coach, and we hope the new manager will be much more successful.
If Leverkusen had not immediately chosen Ten Hag as their manager and instead chosen another coach before the season started, perhaps Leverkusen wouldn't be experiencing the same predicament as they are now. However, I am more confident that Leverkusen will gradually improve, even though no new manager has arrived to replace Ten Hag. In this case, it will certainly be impossible to compete with Bayern Munich, let alone surpass them and break their dominance in the Bundesliga this season.
Even if they can quickly replace Ten Hag, I don't think Leverkusen can immediately dominate Bayern Munich, as Bayern's current performance is very convincing, showing they have improved significantly this season compared to several other teams currently competing in the Bundesliga. It shouldn't be too late for Leverkusen to bounce back with a new coach, especially with so many matches still to play, giving the Leverkusen players time to adapt to the new coach's game plan.