I have been trying to get either of these to work. I have seen a few people say that they got greenluma to work. One of them had said that they did it through WINE, but I have been having no luck.
If you only need a simple dlc unlocker + family sharing bypass for the native steam linux client I can give you one. It's a frida script, so it's unwieldy to inject it
I would appreciate that a ton. Sorry I'm still learning linux since I only started daily driving it around 3 months ago so I may have to bug you for help.