Both. It just depends on the situation and the people. I used to be very shy as a kid, but I grew out of it mostly. Even though I have horrible anxiety, social anxiety isn't usually the problem. I'm not all that awkward or anything in casual settings and they don't bother me. I actually love being around people as long as I'm not out of my element. It's only things like job interviews or similar situations that I'm a complete wreck, any kind of public speaking.. situations where I'm obviously being judged. Even with strangers and people I don't know well, it just depends. Some of them, I can be super talkative and bubbly right away and then with others, incredibly quiet and reserved. It all depends on the energy others are giving out, as to how I react.
Of course, the past few years I've almost completely isolated myself. It's not about people though and I'd like to have some friends to hang out with again. I enjoy my alone time and need my space, but I've had too much of it these past few years and I'm lonely now. People really like me though and everyone tries to be my friend. Now the main problem is that I live in a new state and don't know anyone.