tbf that’s on purpose

just buy an extra ssd (i’d recommend 200 gigs at least, but if you’re gaming, obvs more space is needed), and install linux mint or pop os on it. imo pop is easier, but mint is more windows-like
set your bios to boot from the new ssd, and make sure you install everything on the same drive
and just keep the windows install, so if you need it or linux is too hard, you can go back easily
i think you have physical space for several more sata drives, so if you need even more space you can get a larger regular hdd, for linux stuff

fyi, while most games will happily run on linux, but you can’t use the same steam library folder, i’ve tried lol, so take that into consideration (however other loaders, like heroic launcher and lutris can run stuff installed on a windows partition, as long as the prefix is on a linux one. technically i guess you could use drm free steam installs too, but i’m already getting into the weeds, for simplicity’s sake, just use a separate drive)

you can use ntfs (windows) partitions, for example i use two for downloads, movies, music and other platform agnostic stuff

i’d be happy to help if you need it

just get an extra ssd, install mint or pop (or both on separate partitions) and try

there is a learning curve, and there’s always new stuff, more depth, but imo the above two are fairly easy to understand. pop is more osx-like both in looks but also, it’s somewhat locked down, which can feel limiting but it keeps things simple. i’ve been using it in the last few years daily. i was using mint before that, i started daily driving linux with it, but i managed to mess it up enough that every game was struggling to run lol, but i played hl:alyx on there without an issue for example

nvidia doesn’t make the best linux drivers, but some think they are completely unusable but actually it just means that there are some games that are glitchy or slow, for instance forza horizon runs better on my steam deck than my rtx 2080. although recently it went from 20-30 fps to 30-40, so it will get better at some point
edit: actually, the above was last week, there were some updates and it’s a sputtery 60 fps now

next build will have an amd card for sure, but nvidia is mostly usable too. the “anti-cheat” blockade is more frustrating imo