I think that's something you can learn. It definitely takes some training. But speaking from own experience, I think I started out as an introvert and in my very fist job I had to talk to lots of random strangers each day. And I adjusted. Nowadays I can start conversations easily, do smalltalk... I mean I'm probably still the same person and sometimes I like to talk and sometimes I don't like to open up at all. But I know what to say, how to keep a conversation going or end it if I like and it doesn't take that much effort. And I think that makes me a bit more at ease. Knowing I have that skill available. But it certainly took me some time and effort to get there.

And I'm still not particularly good at mimicking an extroverted person. But I don't care that much anymore. If I make mistakes, or I struggle with some conversational partner, that's just what it is. It makes me uncomfortable. But at some point I'm going to have other problems to deal with and I'm going to forget about it.