on SteamOS you don’t install things to your system (i.e. the equivalent to apt/yum/pacman/portage in other distros) because it’s immutable, but there is a store to install Flatpaks for your user which I’m sure you can install on other distros (or something similar enough)
That’s exactly what I didn’t understand without knowing I didn’t understand it!
SteamOS used to be debian based, it’s now Arch based, not that that should matter to you because 90% of using a Linux for day to day will be through the DE or with commands that are the same for all distros, so anything with Plasma/KDE will look and behave the same as SteamOS.
While that’s true, 10% is a big percentage!Especially when you first discover a distro, you spend a lot of time trying to understand how to install this and why is that not working, at least for me: not being unable to replicate what little knowledge I had about linux (from ubuntu and popos) on steamos really confused me, even though I tried to gather as much information as I could.
I guess steamos being immutable also played a big part in my confusion…
Understanding that 1. steamos is arch-based and 2. it means it manages packages differently from debian-based distros just cleared up a lot of confusion