Me too want to resign, but as long as I work no more than 3 days a week, it is still okay for me. I work as delivery rider and it is very dangerous on the road, sometimes have to carry two steering rack (automotive part) using small motorbike to very far location.
Actually it gets worse, no more professional job for me, have to do menial jobs like cleaning and delivery. Other factor like age also contribute to limited choice of job. If you have social anxiety and still want to work, you can choose jobs that is not interacting with people, like operating machine, etc. You can find jobs with flexible hours, that is not physically and mentally demanding too.