Are there any clubs that you would interested in joining that are linked to the college?
Loneliness is tough - you can think you are the only one on the planet feeling these feelings but when you start to reach out and get honest with others - you'd be surprise how many others feel the same or similar.
Take one step at a time - take the focus off the ladies and just begin by relaxing into friendships - with both sexes - that really can take the pressure off of you. You sound like you are putting a hell of a lot of pressure on yourself - no need to at all.
People like other people who are interested in them - folk like to talk about themselves in the main - sharing stuff, giving advice, swapping ideas etc. Why not have a "practiced" set of questions in your head when you meet new folk - just light and casual questions or comments.
You get lots of "best years" in your life - you can choose when you take them! For some it's college or school years, others it may be having children, or early marriage years etc - and for others the whole of their lives are the best years!! Truly you are not set for a downhill struggle once your college years are over - you get to make it as pleasurable or as terrible as you want it to be!
Mabs