Unemployment

So if you have really bad anxiety, overthink allot and really hate new places and things like getting a part time job.. What would you do.. I mean i emailed a couple of places asking for a job and didnt expect them to email me back but now i have a trial shift im panacking coz what if im useless and everyone at the workplace are *****es??? Am i insecure? Maybe can you tell..... Anyways... What should i do?

Do the trial shift.
Every step that takes you out of your comfort zone extends your comfort zone and makes you more resilient, which is a key part of life.
It's a first step but an important one to make sure you can develop the skills needed to support yourself and your future life.
Best wishes