It's very ridiculous and seems very unfair to me to see a big Bundesliga club being beaten by a middle class club like Frankfurt with a very big score.
I watched the match and I didn't stop saying harsh words in front of the television It was very embarrassing for Bayern Munich to be beaten by Frankfurt. Meanwhile, in terms of performance, Bayern Munich had a strong performance but could lose in an away match against Frankfurt, which was very disappointing.
Maybe you wouldn't be too disappointed if score was only small, but the first defeat that Munich got was very big and very embarrassing and I'm sure a lot of gamblers lost their bets because this very bad performance and it looks like this is the surprise of the Bundesliga.
I understand what you feel indeed Really bad performance, they (Bayern Munich) was defeated by a big score. That result was very embarrassing and it's not just for Bayern Munich but their fans either. Because on paper Bayern Munich should be won or at least draw, considering how good they this season and also with their strong squad depth this defeat surely was very disappointing. Although on the other side I am happy, because Leverkusen has the opportunity to widen the gap again, but Bayern Munich defeat was not expected at all.