Walking away from a team that makes you worse is a decision, not a defeat.

Leaving gets filed as quitting because the two look identical from outside. There is a real difference between stopping because it is hard and stopping because the place is producing a version of you that you do not want. One is avoidance. The other is a judgment you are entitled to make.

Ask what you are like in the week after a session there, and whether that has held for months rather than one bad night. If it has, leave without needing anyone to agree. You do not owe the room an explanation it would not accept.