Don't stop trying. Remember the world is full of girls who are a bit more awkward than their peers, not to mention girls who had socially awkward fathers. As long as you're making a sincere effort to interact pleasantly with people, without pretending that you don't have a problem, you will find girls who are willing to overlook your awkwardness. It's just another unattractive characteristic that some people mind and other people don't, like being chubby, short, boring, badly dressed, poor, always late, glib, irresponsible, whatever. People can even find it endearing.

Good intentions + sincere effort + honesty about who you are = nothing to be ashamed of.