@beardalaxy @LukeAlmighty @NEETzsche It's not so much the fact that Linux is FOSS but rather that it is a Unix-like operating system. Unix was meant for mainframes and servers, but some people ended up creating desktop environments for it.
I think Linux is actually good either if you are just using it for web browsing and word processing (assuming you are using a distro like Ubuntu, Mint, or Pop_OS) or using it for advanced stuff like programming and systems administration. Unfortunately, there is no in-between, yet.
I'd say that ReactOS and Haiku are more desktop user-friendly open source operating systems (ReactOS being a Windows compatible OS and Haiku being a BeOS compatible OS), but they are far from being usable right now. ReactOS has been in alpha since 1996 because they are trying to keep up with the latest version of Windows. I think right now, they are sticking to Windows 7 compatibility until it is virtually compatible with all Windows 7 hardware and software. Haiku is compatible with BeOS, which was an obscure desktop OS in the 90s. It's probably further along in development compared to ReactOS, but is still in beta state. Though, Godot apparently supports it.