Hey Dargard,
Welcome back to WoW! I know how much the game has chance since Cata and it can be a lot to take in, especially by yourself.
While on US-Lightbringer is more midcore instead of a casual we do focus on having fun together and doing dungeons, raids, and more. In addition to that we also have a great inclusive community and an active Discord for text and voice.
You can read more about us here:
Or add me on battle net (Aya#11373) and see if we will be a good fit for you. I hope to hear from you soon!