Does anyone know if I can access and how to play on Korean Final Fantasy XIV gaming servers on a Steamdeck/SteamOS?

I am looking to purchase a gaming handheld for my girlfriend, most likely the Lenovo Legion Go S with SteamOS. I am wondering if there is a way to access the Korean FFXIV servers and how to add them to a game library, or if that's possible. I am not super tech savvy on this so sorry if this is an easy answer.

I know it's possible to do on windows handhelds but personally having a Steamdeck and her trying it out on the North American servers, she would love to stay on SteamOS