Looking at the current squad of Dortmund without Bellingham i don't see a single Dortmund player that would make it into the starting 11 of Bayern.
Looks like you really dont know the Dortmund squad much as they have a lot of players that can play easy in the Bayern Munich team.
Youssoufa Moukoko , Gregor Kobel , Julian Brandt , Haller and a few more are would be fitting there.
when Dortmund has the chance to win the title then of course Dortmund will also try hard and the example is like this season for example.
This or season they was just really unlucky for take there chance to get the title.