As a neurodivergent, I get through these events by pretending to be an alien anthropologist trying to blend in and study humans. Conversations are usually easy to start by asking, “So, how do you know the host?” Most people enjoy talking about themselves, so if you nod and listen, you’ll be popular.
Occasionally you’ll meet someone truly interesting. Arrange to meet with them later and follow up. This is pretty much the best way to make friends in the modern age, with intentionality.