[Eternal]

Loneliness is caused when we feel a lack of attention from others. So this means that being in a relationship isn't the only way to fix it, which is a good thing!
Do you have any friends you could spend some extra time with? Even if they aren't that close, this is a good opportunity to get to know any acquaintance you have. Are you able to contact the guys you like and just hang out sometime? You don't necessarily have to attend the same school as someone to be ale to see them
Another option is to spend some more time with your family. Even if you think you don't like them that much, you might have fun just watching a movie or going out to dinner together.
One last option I can think of is to join a club or a sport so that you can meet new people and have fun while you socialize. There are usually art classes or cooking classes offered in lots of places, so you could start there.