I use the DODI patched variant of Red Alert 2 which works out of the box on Windows 11 as it ships with all the necessary patched DLLs to work on modern Windows.
Ah, I’m installing from an image of the CD I had as a child ;) probably explains the differences!
Could be you'll need a differently patched up mutant breed for Linux?
Maybe. But I ran out of patience after about an hour. If gaming on Linux is advertised to "just works TM" then it really must just work without hours of tinkering.