I don't think there's enough activity on Lemmy (yet) to justify specific communities like that. Gaming@beehaw is the only gaming community I see much traction in.
Try searching here: https://lemmyverse.net/communities
Keep in mind this lemmy is no longer federated with sh.itjust.works lemmy.ml or lemmy.world
You may need a backup/second home lemmy to subscribe to them.
Keep in mind both those instances are fairly overloaded. I believe lemmy.ml is actively telling people to go elsewhere and subscribe from there.