Urg, talk about a no-win scenario.
In Westeros: Iron Islands is worst due to thralldom, but the Boltons come close, likewise most of the houses to have ruled Harrenhal. I can’t imagine it would be great to be smallfolk on the lands of House Clegane or House Wyl either.
In Essos: life among the Lhazarene seems rather precarious certainly. Naath seems like a paradise whenever the pirates aren’t there. Sothoryos I think the key thing is how adapted you are to the murderous flora and fauna. The Basilisk Isles seem awful. Nefer seems a bad place. As not the strongest dude out there, the three daughters of Hyrkoon would suck. Carcosa, K’dath, etc.