I've always had an issue with socializing. I'm ok one on one for quick conversations, but the longer the conversation gets and the more people you add to the group the worse it gets for me. This is true with work and extended family.
I have learned, for myself, that I'm ok with that. My family is used to it, and my co-workers are used to it.
That doesn't mean you should strive for that. There are ways to improve communication skills for introverts. I just don't have the energy to try. One of the issues that I have is that in large groups, when there is more than one conversation going on, I can't follow any of the conversations because they all interfere with each other.
So -- no real help here, but I do understand.