Introverts handle social events perfectly well. Being an introvert means you find social situations incredibly tiring and need to spend time alone to recover; it doesn't mean you don't engage with them when you're there. The book "Quiet" by Susan Cains is a very good explanation of how introverts, extroverts and ambiverts work on a psychological basis.

If you find social situations difficult then you're probably just anti-social. I don't mean that as an insult, simply as a statement of fact. Some people don't enjoy socializing, especially in a 'work' context. If that's you then either don't do it, or learn how to do it better. It's a skill like any other. Join groups that are designed to improve your social skills. Believe it or not, there are courses you can buy about getting better at networking.

But remember that introverts can enjoy a party, and socializing, as much as anyone else. They just need time on their own to recover afterwards. Just as extroverts need a party to recover from time on their own.