Haters would say that he profited from having a solid defense and letting Frankfurt's attackers play out their individual class on the counter (Kostic, Rebic, Haller, Jovic and later Kostic and Silva, Kamada/Younes to a lesser degree).German posters. Explain to me why Adi Hutter Gladbach looks a disfunctional monster. I don't watch their games, but some of their defeats are terrible. And during this they defeated Bayern 5.0 on a Cup match. Is this related with him being known as someone who uses man marking, or it hasn't nothing to do with that.
I actually felt he did a great job with Andre Silva at Frankfurt, particularly because they played with 2 upfront and Kostic helped him a lot to score goals, since he went to Leipzig, well, things aren't going in the right way. Anyway didn't knew Marsch was sacked.
Another facet is that Gladbach are done on a club level. Hofmann (contract expiring in 2023) and Ginter (2022) have openly talked about moving to bigger clubs, Zakaria (2022) and Thuram (2023) seemed to be all but gone in the summer, Plea (2023) is supposedly thinking about a move as well. Neuhaus (release clause) was linked with a host of top clubs, but has been pretty wank this season. Everyone knows that making top four with Rose and getting out of their group of death in the CL/getting to that cup game against Dortmund last season was all they could hope to accomplish with Gladbach. Now it seems like they are just passing the season until they can move next summer. Against the top clubs the team gave it their all, against the lesser clubs they keep dropping points. Some injuries are part of the story as well.
It's objectively a shitty situation for Hütter. So it's hard to say how much is down to himself and how much is just a consequence of Gladbach getting to the end of their cycle.