Q: Best server for roleplay?
Servers only matter in WvW… so unless you have a strong urge to RP in one of the battlegrounds, it doesn’t matter. Only selection that matters in PvE is if you’re in NA or EU.
You’ll likely find what you’re looking for in a RP guild. I believe some recruit in the looking for section:
https://forum-en.gw2archive.eu/forum/community/lookingfor