I agree with divine. They are on a dating site because they want to date. Unfortunately, they just aren't interested in dating you. Stop trying to force a relationship on men who have made it extremely clear they aren't interested.

I also agree that you might be happier if you devoted your time to school/work or hobbies or volunteer work-- something other than just looking for men online. If you had something going for yourself like that it might also make you a more attractive match to potential partners. Most people want a partner who can support themselves because it puts a lot of pressure on the other person when you don't work and don't drive, especially if you're not seriously disabled. If you had more things to occupy your time, you probably wouldn't come across as so desperate, which may be turning them off.