Bocchi didn't really land for me, so waiting for someone else to answer might be better. The few times she actually performed were pretty interesting. Lots of creative camera angles and good animation. The characters were all fine too. I just found the show to be pretty average overall.
On another note, I wanted to mention, the first episode of BanG Dream Season 1 is on their official channel on youtube (and only episode one, for some reason). You could watch it there and see if you even want to bother pirating the rest of S1. It's a completely different animation style than what they used in S2 and beyond. S1 is my favorite, but I know a lot of people skipped it and went straight to S2 so you could probably get away with doing that as well.
https://www.youtube.com/watch?v=PGFqLLCOkkM