Almost 20 years ago, I’ve got a steam account already. Somehow, I’ve lost the account-name, but I still see it in the friend list of my brother.
I’m quite certain to still know the password, but I cannot remember the account-name. Any way of recovering it?
Previous nicknames on profile page? Maybe it’s something similar. Also, notifications and checks from steam to your email. You can trigger a new one with a cheap gift if you still has access to that address.