If you want to focus primarily on gaming that can also do basic office work, check out Bazzite. If you want to do primarily basic office work that can also do gaming, check out either Bluefin or Aurora depending on whether you prefer Gnome or KDE, respectively.

All three are sister distros and are part of the immutable distros collection. Unless you actively want to tinker with your system level files, immutable distros keep everything that you need to run your computer read only. The only things you can mess up are your own files, so as long as you reboot from time to time, your computer will always be up to date and working. The result is you spend less time trying to get your computer working and more time doing whatever it is you want to be doing on it.

A lot of people will recommend Mint or Ubuntu. They're… fine, but they're not what they once were and you can do better. Don't listen to anyone who tells you to run Arch unless you are into mining your own silicon.