Where are my character and HUD and hot bar settings stored? Are they still accessible on steam even after uninstalling?

I changed laptops while on hiatus from the game, and gave away the old one. However, if there's remnant files on my steam deck I should be able to recover them.

>Square won't unlink my PS3 era XIV account from Playstation network

Goddamn, this is so fucking archaic. So if I want to play with my PC account I have to make a new PSN account and buy base XIV there?