So here's my conundrum..

I start reading pua, I start reasearching it more and more, reading a chapter a night before bed or a few YouTube videos.. My success with girls increases, I get a few one night stands and get more confident with girls so I stop reading. Then I meet someone who has potential for girlfriend material and it inevitably mucks up (it always seems too) and then I just feel crap again.. Does pua really help long term? What can I do to be successful all of the time. I've been single for 3 years now.. I'm 22, quite good looking and at uni so have had plenty of one night stands, but when there's a girl I like, find really attractive in one of my classes for example I feel like I have no game, my confidence decreases and I feel crappy and ugly.

Don't be negative please.. Just help a brother out!