I feel like I am you, three years in the future. I understand. I'm pretty sure you don't want to be in my position when you turn 22.
Looking for jobs you don't give a shit about and signing onto jobseekers allowance, as well as a few other things that happened in my life recently (a breakup, derp)are so fucking depressing.
Perhaps reapply to university. Dude. The only person who will be able to fix this is you. You just want to exist? Lets go on an adventure somewhere.