Job Struggles

Not super sure on where to post this so i guess here is the most appropriate, I am soon turning 18 and since school is about over I wanna start looking for a job so I can earn some money going into college. (I’m leaving for college late August) The last job I had was about a year or two ago at Wendy’s. I wasn’t trained very well and overall I just didn’t fit in with my coworkers and plus since I was new and it was my first job ever not many people were pleased with my progress. And the fact most of the workers weren’t being clear on directions also made it hard to process. I also have TERRIBLE social anxiety, not super great with people, and since I’d be so nervous I just freeze up and forget everything. I worked there for about a month or at least half a month before i decided to quit both due to me feeling like it wasn’t working out and an unfortunate death in the family. And I guess I am just scared that I’m just not competent enough to have a job due to people just bashing me over every mistake (I was the only one working up front so everyone else was in the back) and idk it’s just scary. I only had two coworkers who were decent and understood my struggles and didn’t treat me any lesser than them unlike everyone else. Maybe it just sucked because it was fast food idk. I’m thinking of just sticking with the retail route so i can just be a stocker, or maybe i can also just door dash since i’m practicing my driving skills and then get a job once I’m at college. If there are any tips or stories anyone would like to share that’d be great!!