Need a job but self-conscious of my obesity

I'm 4'11 and 261 lbs, so I'm considered morbidly obese. Plus, I have a couple of medical issues (spine disability - have to use a walking stick for my balance and a heart problem requiring a cardiac ablation next month which I'm hoping will greatly improve this issue).

I'm currently in an online bachelor's program at WGU for accounting and will graduate by next fall.. if that counts for anything.

I'm drowning in debt and trying to find desk jobs around me, which seem to be few and far between, but.. I am so self-conscious of my size. I don't wear my weight well, so I have a large belly and butt which makes finding flattering tops (I prefer loose) and pants difficult.

(I also like to wear a face mask in public still.. so I'm not sure how an interviewer will react to my wearing a mask)

Any tips for finding a job with my size concern?