I’ve never been good at introductions

I’ve spent my life moving every 3 to 5 years to new places and meeting people from all walks of life but I still struggle with introductions. Most likely I overthink it. A simple question. A simple beginning.
Where are you from?
I stumble. I don’t know how to phrase this answer. I’m not from here, nor there. Not in the traditional sense. What do I say?
Oh I’ve moved around a lot. Where are you from?
I deflect. I turn the attention away from me. I should work on an introduction. Where do I begin?