Can someone talk me down

Hello everyone! I’m currently a 1L in a Mass Law School and I’m going through a bit of mid-semester anxiety over Lawyering on all classes. ((In case you are wondering what Lawyering is or it’s called something different at your school, it basically a legal writing class for first years)). I submitted my first try at a trial brief last week and just got the edits from my teacher back and I feel like she ripped me to shreds. I felt pretty confident submitting it but now seeing her edits I’m beginning to fear that I did really poorly. She didn’t post a grade but my friends in the same class did get their grades and they were in the low 70s. This is something I’m completely fine with getting as it’s only 20 percent and I can come back from that, but I’m just worried about what if I totally bomb this class and fail it at the point. And what happens if I become a failure because I can’t understand the basic necessities of legal writing. I do have a diagnosed anxiety disorder so I understand why it may be easy for some people on this subreddit to deal with this issue in a different light than me, but to me at this point it’s a really big deal and i can’t talk myself down. I would really appreciate any support if you have any!! Thank you :)