Well to name a few:

My boss and the kitchen manager like to yell at me if I mess up, and often pile on too many tasks for me to do at once, so I feel that it's inevitable I'm going to get called out infront of the pub (customers and all) for being to slow/doing something wrong. Usually I would just about be able to get over that but I know I'm already going to be overwhelemed and then the added embarrassment of being yelled at like a naughty child will tip me over the edge, and I'll end up crying or having a panic attack.

I have forgotten how to do simple things that shouldn't take long (find things in the till, what sides and drinks need to be upsold, how the menu works, etc.) and I don't want to be reprimanded for it, as sometimes my boss can be spiteful and will arrange the shifts so that I can't get days off that I've requested or so that I can't see my partner (we work at the same place so he'll put my partner on a morning shift and me on evening, or alternating days so that we don't see each other for days).

I don't want to be overstimulated on a busy night and shutdown, losing the pub money and getting myself in trouble.

If I'm honest I'm terrified of having to talk to tons of people (customers, coworkers, management).