How do people get into relationships so easily?

I've lived almost 30 years on this planet with not one person interested in having a relationship with me. Whoever I've asked has never felt the same. I'm even on dating sites and I don't get any traction there either. And yet I see hundreds of posts on relationships in this subreddit, people all around me getting married to their college s/o's, just getting on with life. I'm genuinely curious at this point, what is so different about me? Am I missing out on some giant hint that everyone else has somehow got? I understand not everyone has the same life and all but is it really that different?