I turn 22 this year. I want a job. I have never applied for a job. I know that it does not matter if I embarrass myself in front of an interviewer or if I quit in the first week or get fired. I am still afraid. I wish I could get paid to roll around in mud and have tomatoes thrown at me. This would probably feel less shameful.
Try not to take it too seriously, it's easy to let work cause autistic burnout.