I think this thread has all of the active RP guilds on the server.
https://us.forums.blizzard.com/en/wow/t/the-four-realms-rp-guild-directory-discord-server/20118/25
My guild offers a home for law-abiding characters that live within the Kingdom of Stormwind, particularly if the player is interested in guard-type RP. If that’s not for you, there are several other excellent Alliance RP guilds on the server.