Welcome back!
I’m sorry you haven’t seen any replies yet.
I don’t have anything terribly informative to add.
There is this thread
where you might find someone who sounds good to you in the later posts.
You are on Draenor Horde, so you have maybe the best selection of guilds in the game available, but I don’t know any specific ones.
There are now Communities in the game, cross-realm gatherings that are like guilds-lite. Most of them seem to have very little activity, but you can look here:
It’s always easy to find people who are raiding, or doing high M+, if you play at that level, but we casuals don’t have the shared objectives to hold us together.
I hope you find a nice place for you. 