Don't be too hard on yourself. I do get where you are coming from. I was really ambitious when I was you're age and was pretty hard on myself. It felt like I wasn't accomplishing anything in life. All I can say is that give yourself time for everything, you will soon find out as you age you become wiser as well. In no time you'll find yourself a steady job, suddenly you'll be seeing your bank account savings steadily grow and who knows love could be just around the corner.
I was so like you when I was in my twenteens, now after a decade I can say all the worries of the past is behind me. Savings, a relationship, feeling good about myself. I've found it. Soon you'll find these too. I wish you the best!
Thank you! Your words are forever engraved in me.