I think itch.io might allow game purchases without any account, depending in the game, but even getting drm-free games is almost always going to require some kind of account somewhere. There's always the "high seas", but that's not something everyone is comfortable with.
GOG is probably your best option for completely DRM free games, and fwiw, a lot of Steam games don't require you to use Steam to launch them. A fairly thorough list is kept here: https://www.pcgamingwiki.com/wiki/The_big_list_of_DRM-free_games_on_Steam
Barring a violent revolt, there's really no acceptable way to deny a transition of power after the electorate has voted for it, even when the president-elect is clearly this malicious.