Everyone has to start at some point. There are going to be a few trial and errors.
Few years under my belt lol, but I remember once where I had to pass this typing course as I had to do so many words per min. I was not very good at it lol. I worked in a shop whilst doing my alevels, which I flunked with a D, E and a fail. I got a job after applying to loads. no internet back then so i wrote to at least 10 jobs per week. It was an office junior job. The interview went ok, and I left my umbrella in his office and had to go back and get it. I felt like an idiot lol. But, I got the job. Then worked way up to customer service, then purchase ledger. Had couple of kids, did caring work for 4 years when they were little. Went back to the office when they was older, and worked way up from there. Hubby, he did painter and decorators course, became qualified but hated it. He was also worked in co-op, butchers, was a welder, worked in a warehouse, working at hovis in a bakery, sold kirby hoovers, worked selling car parts, also business development manager. He hated being in management. He works in a warehouse at nights making eye drops and ear drops, vapor rubs etc. Loves it how its just plain and simple, no pressure to make sales and can be himself instead of 'salesman'.
What im try to say is that its going to be a bit of trial and error for jobs, but you will find something that works for you where you can ether stay where you are being happy, or work your way up to where you want to be. The fork lift thing, if you dont get it, there will be other companies where you can work, and then pay for a fork lift course as you are earning and try again. Or try working in a shop. even if you get something seasonal its something to put on the CV. If you are working, it will boost your confidence. Even if its just temporary and not quite your thing, you are earning and that will make you feel good you got money coming in. Not everyone can walk into their dream job right away. Some people zig zag to get there, I know I did. You will get there im sure 🙂