I want a gaming device but also a device which I could “replace” my PC with for some basic stuff we all do on windows.
Like watching videos on YouTube, Netflix. Installing any app I need, installing mods. Installing adblockers.
Maybe do some MS office work and write/view documents etc.
Is that possible while staying on SteamOS? Or this operating system only meant to be used for gaming with steam launcher?
As a PC replacement, Legion Go is probably a better option (unless you’re well versed in Linux). I’d still go for Steam Deck myself.
Legion Go or ROG ALLY might be a better fit for your particular use case
You can do all that in the SteamOS desktop mode. I’d definitely recommend keeping your keyboard, mouse, and monitor though and perhaps a dock. With MS Office, open-source software exists that is mostly compatible with Office files.
…I’d be cautious trying to use it as a pc. It’s a gaming device first, and everything else is secondary.
Buy a Steam Deck and an iPad Pro. Use the iPad for your basic stuff and as portable display for your Deck.