No comments on your PA, you are more than fine. Get involved in an activity you enjoy. Hit on more girls in school. You need the brainy, slightly reserved type. I was one of those, and went for guys like you. There are plenty of us who are very attractive, the stereotype just isn't true.
Your insecurity is going to be a problem for you. Even if you are a player trolling, the fact you make these kinds of posts says your are worried you won't find a nice girl to love you. I would suggest you stop these posts and *only* post the positive things you are doing. Can you get girls to smile at you? When was the last time this happened?
Also, what are you in school for?
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh