Kubrick twist: Searching Steam aliases is notoriously broken! This seems to be a known issue that’s been causing consternation for half a decade. Specifically, aliases with trailing numbers (e.g. spacetoast123) are unfindable with the exact string, and usually with a partial string.
So, while I’ve been able to send a friend request to the Second Prize raffle winner ($25 USD), who has no trailing numbers, nothing I’ve tried has brought up profiles for the First and Third Prize winners ($75 and $25, respectively).
If you entered the raffle, and your Steam alias ends in numbers, please friend me via my public profile page: https://steamcommunity.com/id/rhinocrate/ Over 300 hours of Civilization VI? Yes, it’s a problem. Regardless, you may have already won! I promised not to post handles publicly (and creating a duplicate with the same alias seems quite easy) so winners can’t be directly announced.
Bottom line: If you ever run a stunt like this yourself, even though it might make you look spammy, get an email too.