Believe me, I totally understand what you mean. Suddenly your parents start giving you those looks and defensive tone, right? As if they want to throw you out unless you become a fully functioning member of society (and when that happens, you're of course supposed to move out by yourself).
I've done the job search too and my only advice is: Keep going. Just keep searching and don't take rejections personally. Don't start doubting yourself because 1) it's no use and 2) they'll notice during job interviews. I think all you can do is keep believing you'll find something eventually.
It sounds like you're doing a lot for job and apartment though. You certainly spend more time on it than I ever did! So kudos. I got a job and so will you.