Then get professional help if you can't improve on your own.

Social skills aren't innate and some people take longer than others to get them.

Getting help is a lot less embarrassing than living your whole life without social skills. Maybe that's a shrink, maybe that's a day program for people with autism, maybe it's just hanging out with other introverts. But itll only get better if you want to put the effort in. If you don't put effort in, don't be surprised when nothing changes.