GAD & gym anxiety

Cross posted with some more details.

I have terrible GAD & gym anxiety. I'm awkward AF anyways but once I get in a gym, I literally freeze. I've tried a couple smaller ones plus a YMCA. And I just leave. I don't know what I'm doing and I'm so scared of being watched and made fun of.

I am really underweight due to crohns disease. My doctor recommended weight training and i agree. I'd love to. I used to have a butt before I lost all muscle/fat, but I cannot overcome my fear of gyms. I looked up women's gyms near me (idk if this would even help). I found a Curves but I think they seem to focus on cardio which I don't need much of at this point. I'm barely 90 pounds, and I want to not feel like a stick and just healthy again.

I currently take a rescue med at night for sleeping. And I tried Lexapro but it made me feel absolutely horrible even worse than normal. I think my anxiety is causing my crohns to act up. I can never really eat due to it.

Any advice?