Bundesliga are indeed needs more competitor like dortmund to beat bayern munich domination. actually rb leipzig could be the one , if only they want to make an investment on players , not making business out of their players.
leverkusen have been there in bayern munich shadow as well but it's never enough to become bayern competitor with their inconsistency over the last few seasons.
only dortmund being consistent catching bayern munich every season which a bit bored to watch to be honest.
I agree that the results of the Bundesliga were not that exciting in the last few years because Bayern Munich is just to dominant for the rest. The thing is, that dominance is not coming out of nowhere or out of pure luck because the officials of Bayern Munich make a great job for a few decades in a row now. That is the reason why they are in such great financial position today. They are even able to keep up with the best teams of the rest of europe, even though Bayern does not have that immense amount of money from TV rights like the english clubs and/or hundreds of million € pumped into the club by sheikhs or oligarchs like in ManCity, Chelsea or PSG. So it's Bayern itself that does a great job, so the other clubs of the Bundesliga really can not complain about an unfair advantage of Bayern.