the fact I'm probably not going to ever get a girlfriend, due to a combination of low attractiveness, social awkwardness, and being on the Autism spectrum. Or at least that's what I think since I'm always rejected, plus it doesn't help that I work as a Software Dev (work hours and such) making it even harder to meet women.

Your issue is foremost your lack of confidence. If you feel like your autism is a handicap, it's time for therapy. One of my students has recently also started a yearlong class where she learns how to interact better with others (e.g. last week she got tested on the topic of small talk). Maybe this is something for you too?