Welcome to the BB forum.
I'm sorry about what you've experienced. I'm not a mental health professional but I've been working as HR manager for many year. I'd like to encourage you not to give up hope. The economy is gradually on track to recover. The pandemic is almost reshaping everything, many jobs are disappearing but more opportunities are emerging. The overall market demand to the workforce is strong.
Some suggestions for you:
1. Do some research about the trend of latest opportunities at the moment and match with your interest and capabilities. If it requires new training or study, plan for it.
2. Start from an easy job, better a part-time one, to give yourself more time to prepare, practice, summarize and improve.
3. Engage a career coach if you want. Tailored coach according to your situation should be helpful.
Those who made fun of you are absolutely wrong. Sooner or later they will see you shine.