I've been working with Linux on desktops, laptops, and servers for a decade.

Use Mint or Fedora for distribution. Use Cinnamon or KDE for GUI. Everything pretty much just works, man.

Games work -- Steam, Battle.net, Lutris, and others I am sure. Sleep works -- just as well as it does on Windows anyway. Network works -- better and easier than Windows IMO. Updates work and waaaaay better than Windows. Backups work. LibreOffice works. Browsers work. Tools work. USB thumb drives work. External USB enclosures work. CD/DVD drives work. I haven't tried blu-ray but I imagine that works too.

The only things that don't work are the things that lock you in to Microsoft. Those are vanishingly small numbers of things outside of business, and in business it's mostly because of inertia.