To me, it seems like most of Lemmy consists of users who are older millennials (born at some point in the 80s), male, and about 50/50 split between living in North America or the EU.
I really love messing around with sysadmin stuff and Linux. I also have a blog page in case you'd like to have a read, but I'm currently in the process of rewriting it in Svelte instead of pure HTML and CSS (disgusting, I know), so I haven't had the chance to write more posts.