If you want to reach out, please do so by email: firstname.lastname@example.org
I can also be found on Discord, as Demonen#3234, but I generally ignore or deny random friend requests.
While I technically still have a Facebook account, I don't use it. My LinkedIn hasn't been updated for a decade, and I haven't logged in there for years and years.
My twitter handle is entirely irrelevant.
On the whole, that kind of social media doesn't really appeal to me, so I stick to chats. IRC, Discord, Matrix, that sort of thing.