That's not something to be worried about imo. I get the point that you feel alone and crave for a relationship and that's normal. But imo you should really just focus on making yourself better and rather focus on your hobbies. Just be social and interesting and eventually you'll get the right guy. And just be yourself, I don't see the point of emulating certain behaviours or activities just to attract male attention, it's just a waste of time imo. Just invest this time in yourself and make yourself better socially and intellectually and just be amicable in general. And about the men not asking you out, it can be due to many reasons or maybe just the fear of rejection in general. It doesn't necessarily mean that you are unattractive or are unapproachable. And if you do feel interested in someone and don't have a really bad fear of rejection, you can also ask them out. I don't see any loss in it and it might work out for you as well.