From what you have described, your main and first problem is TO GET A JOB. Your second problem is that you have a university education... That is a red herrin

From what you have described, your main and first problem is TO GET A JOB. Your second problem is that you have a university education... That is a red herring: You get assumptions and get crushed by reality. Have a university education is not directly related to solve your first problem. And for my experience interviewed A LOT of candidates in the past, is a mental blocker!. Your third problem is lack of experience. In some interviews I do in the past (years ago, when I needed) I fail them too. But I HAVE EXPERIENCE. So I PITCH THAT. Any company with half of a brain wanna somebody, even if half-smart, that get the jobs done. With experience you KNOW what is truly important and with some practique and confidence how express it. --- So, solve your first problem and get a Job, even if is not what you are dreaming. Then accept that the university teach a lot of stuff, but now you need to learn the REAL stuff. Hopefully you could marry both. And that in the field exist many real problems that are the TRUE problems companies are facing (that are rarely if ever discussing at hiring!) so your next try you can pitch you better.