Hey Sin!
Casual Pizza Cats (Horde, Bronzebeard-Aeriepeak) always welcomes new casual/social players 
Many of our guildies are playing both Classic and Retail, and especially in the evenings there’s usually people hanging in Discord for a chat.
If you want to read more you can check out my post here: [H] Casual Pizza Cats offers great community for socials! , you could take a peek at our Guild Reddit, or you can drop me a PM in DIscord at Laura (Orruuc)#4437 