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.
Make sure that your system has python3 installed, otherwise the script will most likely fail.
Now run my script, then download my _agent.js from https://anonymfile.com/84jO/agent.js and put it into your /home/YourUserName/Frida folder.
After that navigate there and run ./launch-server.sh in your terminal.
Open up another terminal in the same directory and enter ./inject.sh already, but don't press enter yet.
Then startup steam and quickly execute the previously prepared ./inject.sh
That's it, good luck and enjoy :)
If something's unclear feel free to reach out, and I know injecting it is annoying but I just can't be bothered to make yet another script to inject it fully automatically just yet