I would like correct your last sentence.
Not all girls go for looks. If one truly love you, she would love
you for who you are, but not for how you look.
Learn how to dress, since you suggested that you don't look good,
at least look presentable.
Stop looking down on yourself, no one perfect, there definetly
something good about you that would charm someone 
Have more confidence in yourself,
Just be yourself.
Failure is not the worst thing in the world, the worst thing is not
to try.