I’m thinking of working as a medical assistant again even though it didn’t work out before should I do it?

Ok, I was fired as medical assistant after 3 months of working there, it was cardiology, I had trouble working there because I made patients uncomfortable, but now I’m working as a cashier and I think I let go of my perfectionist tendencies, I just want a job with reliable hours a consistent 30-40 hour schedule that I can do, I only have a medical assistant certificate and a arts associate I don’t have much I can do with those except medical assistant, I’m working towards a medical billing certificate but I think I don’t have much, I can do. Honestly I think it was because I kept trying to be perfect as a medical assistant that I messed up, or maybe it was because it was the training that didn’t fit. I don’t know, I did a reading two different readings from two psychics, because I’m not sure it’s a good fit and they said different things one said to be a different field one said that the company just wasn’t a good fit. Should I even try to be a medical assistant again, after I failed it once? And was fired within 3 months, we’re trying to do social security but I don’t think I have work credits to live a basic life with SSDI so I feel I should work to make a living a consistent schedule would be nice but I don’t have much I can do because I only have an arts associate a medical assistant certificate and a medical billing certificate and can’t afford for anymore college after this.