Go with Bazzite (if you end up liking it, you can install it on your steam deck, which will be the same process you use to install it in your laptop… but that's for the future.)

Mint is okay, but it's a bit behind and you have a greater chance of something going wrong than with one of the atomic distros (Bazzite). With atomic distros all the important stuff you can't really touch and the only things you can change are your personal files that are important to you but don't affect the system at all.

As long as you reboot your computer from time to time, it'll always be the latest everything. And if something goes wrong with an update, you just choose to boot into the previous version you were just using and everything is back to how it was. Non-atomics you can affect files that are important and you have to stay on top of updating.

Between that and being built for gamers it'll have everything already installed for you, though if something is missing, just click to install from the "app store".

When you go to bazzite.gg to download it, you answer a few questions about your hardware, and pick a desktop environment. Some others have touched on Gnome and KDE for desktop environments, the choice is yours. Do you want a desktop that looks more like windows (or desktop mode on your steamdeck) or do you want it to look more like a Mac? Windows and highly customizable is KDE, Mac and just use it as is but still able to customize through extensions, is Gnome.

Really the hardest part is going to be installing it, but it's really not too bad. There are plenty of guides, but it's use a software to get the downloaded Bazzite file onto a flash drive, boot your laptop from that flash drive, follow the prompts and wait. Don't try to dual boot (keep part for windows part for Linux). It's possible, but from how you described yourself, not worth the headache.