SteamOS won't be any different than another other current Linux Distro.

If you want to use Linux look into Mint or CachyOS.

Mint if you're new to Linux.
CachyOS if you're new to Linux and brave.

引用自 CBonduMiel2：

And when hardware requirements. I want to install on my pc so bad and not have to use windows for anything else but work stuff.

You can install SteamOS today but it will wipe full nvme drive without giving a choice for dual boot with Windows and it only supports AMD GPU.

Bazzite Linux is the closest to SteamOS but with Nvidia support.

HoloISO is a community reimplementation of Steam OS 3. I wouldn't deem it suitable for daily driver machines though (more like if you want to make your own Steam Machine), and support for Nvidia hardware is limited. Afaik there is no proper live mode either.

I would recommend getting a USB, put Ventoy on it and copy some ISOs of distros with live modes on it to test the waters a little and see what suits you best. At their core most are either of the five main distros (Debian/Ubuntu, Arch, Fedora/RHEL, Gentoo or Slackware) and it's all Linux at the end of the day. Probably start with something Ubuntu-based for starters though.

Also best to use a separate non-Ventoy USB for actual installation after thorough testing and making backups. Lots of distros don't like being installed from a Ventoy USB.

And of course always make secure backups first.