Flashbang Exports is a Horde medium RP, medium PvE guild that may be of interest to you. Most of our guild events are in the weekend. As we’re a goblin-only guild, we tend to attract an older demographic, of people less interested in being pretty characters, and more just wanting to have fun and not take things too seriously. Most of our members are in their 30s, with a few in the 20s and 40s. Just kept in mind the class restrictions when playing a goblin - if you only play hybrids then shaman is probably your best bet.
You can find more information about us here:
https://us.forums.blizzard.com/en/wow/t/goblin-h-rp-flashbang-exports-boomtastic/13786/427
Best of luck in your search!