It's not possible to stop Bayern Munich's dominance in the German Bundesliga because Bayern Munich's squad depth is far better than all the clubs in the German Bundesliga, which makes it difficult for them to compete with Bayern Munich for the German Bundesliga title. Even though Erik Ten Hag performs well at Manchester United, it's not a guarantee Erik Ten Hag will win the German Bundesliga title because you can't compare Manchester United squad depth to Bayern Leverkusen squad depth.
It's the same with every big situation, The only team that can stop Bayern, is Bayern. There could be a period where Bayern spends all their money on some players that turns out to be bad, and then they would be stuck with bad players on long and expensive contracts, they will try to fix that and spend more the year after to get better, and then get bad ones again, and suddenly you look and you are terrible.
This could very well happen, it is not impossible and we could see this happen again, it happens in other leagues all the time. So they need to make sure their transfers are good, and they are not making low return on these, otherwise it would be terrible. We could of course be careful with our betting but I bet they will win most their games this year.