Welcome to the Steem blockchain.
I hate to tell you this though, but this is part of the internet. You can't really tell who are extroverts or introverts here. Someone posting vlogs every day and taking videos of these amazing places they go might actually suck at interacting with people. In fact, quite a few vloggers barely even talk to people, even when they're out and about. They just have a camera in their face, talking to it. That's not to say all of them though. There are of course lots of people that love to go out and meet people. On the internet, you can show the part of you that you want to be though.
That means that you don't have to show people the hours or even days or weeks that you spent in your apartment doing nothing, you can show them that time you went out on that hike, just to make a post. Or you can spend all your money for the week at some stupid cafe to make a post about it. Of course, I don't recommend this. There's not guaranteed income on here, and it's much easier to be yourself. But that self can be a bit less flawed and not quite so afraid to tell people their feelings.