I got a job offer! Thanks very much to all the people who messaged me and referred me to companies.
For anyone else looking for a job - never give up. I had to take 20+ rejections before I got an offer. Most of them gave either no feedback or absurdly inscrutable feedback. A few gave really good feedback that helped me change how I answer questions in interviews. I think the strongest technique is to get good written references from previous employers.
