The way I see it, to enter a relationship there has to be a mutual feeling of desire.
Try to regard yourself from a third-person perspective. Would you like to hang out with yourself? I personally see relationships as an enhanced form of friendship, many of the same rules apply (if people didn't like you, nobody would hang out with you).
Wear your interests and hobbies proudly (well, if they are SFW), people will relate to you because of shared interests. Maybe one of those people will be interested in dating you.
But to be honest I'm not the best person to give advice. I have never been on a date, been in a relationship, done anything more than affectionately cuddle and kiss a few girls. Due to extreme insecurities I doubt I'll ever allow myself to be in a relationship, but that's my choice. I have not been rejected I just don't want to be involved. If you want to be involved then eventually something will happen. Just try keeping social.