Couple of points to think about.

-Most people are not nearly as secure as you would think, and that includes the so called seduction 'alpha' types that are just as ridiculous and phony as anybody else who thinks they don't have any neediness to them. It's all about thresholds.

-You're young, and probably hanging around with toxic people. Girls around their late teens, early 20's especially have a lot of issues. Toxic people date toxic people. I know a lot of people in relationships, and honestly, only a small portion I would say are really healthy. We're all a little screwed. If your female friends were perfectly healthy, with a high self esteem and a perfect upbringing, maybe they wouldn't be with those guys. But nobody is perfect. And life isn't a textbook.

-You need to stop thinking about things in beta and alpha categories. A true alpha male would never, ever, ever think 'hmm, is this alpha? is this beta?'. No. That sounds like someone who has read a few too many books and convinced himself he's more of a 'real man' that he really is. It's a slow journey to the top.

Just be the best person you can, and surround yourself with the best people you can. People who inspire you. To me, those kind of people sound fucking atrocious and I would bounce, I especially wouldn't waste my days talking to them if their boyfriends are lingering around in a mopey way, and I wouldn't listen to them talk about how I should be more like them.

Look, plenty of losers get girlfriends. If anything, alpha dudes who have high success rates with one night stands etc are probably more picky and therefore are less likely to get into a relationship, whilst I can think of so many basement dwellers that go into one toxic needy relationship after another, with a just as needy person. They attract each other.

Relax, and keep going on the journey.