How do you find a proper guild nowadays without just blindly trying your luck with random ones and hoping for the best? I want to be a raider again in WoD, but having not played the game with any real persistence since WotLK, I have no network. None of my friends play, I don't know anybody, and WoW's community and guild environment is an absolute mess these days. Instead of a server having a dozen guilds that most people know about, they have ten thousand guilds and not one of them are noteworthy (unless your server has a guild in the top 20 or something).
I've been playing for a couple of weeks to get used to the game again and I'm entirely willing to move servers as well, given the free level 90 boost you get with WoD. However, without having a target, I would have to resort to asking in general chat or looking at the realm forums, which isn't exactly something I'm optimistic about. I don't expect to leap into some kind of top raiding guild after years away from the scene, but I also don't want to waste my first month in WoD going from one hopelessly awful guild to another.
How does one find a decent guild without any network of friends to rely on, and what are the signs to look for? It feels like there's no dependable way back into this game if you don't know somebody. The server community aspect is an absolute circus these days.