It largely depends on the version of Dragonkind that exists in your setting.

For the most part, though, I've always seen dragons spoken of as sedentary creatures. Flying is HARD and takes a lot of energy, especially when you're old and big. So you want to sit around, maybe sleep for a century or two, and you don't want to be pestered by those mayfly mortals when you do it.

So what do you do?

Why not check out this ancient fortress that you saw being built when you were young - its got a swanky cave down there with easy access to a kobold cult you can subvert. And an old underground temple with some priests you can get to make sure the mortals in the surrounding countryside don't bother you.