Any advice?

I’m having the hardest time applying to any jobs because my anxiety is so high. My first job I was terminated in October 2018 for “not improving” when they didn’t train me at all (I was a barista and only last 3 months). I’m wanting to apply as a Walmart sales associate, but I’m not sure what sales associates actually do. I could apply as a barista again downtown, but I’m terrified I’d do a horrible job. Any advice would be amazing. I’ve been out 5 months and I really need to get off my ass and back to earning money. I’ve been trying to convince myself for 2 hours to apply, but I seriously can’t.