Comment by MiddleEndian

Bazzite. It's KDE, it's easy, it's immutable so you can update and it's unlikely to break shit. It comes with Steam already. Keyboard shortcuts very similar to Windows. Dolphin (File Explorer equivalent) responds as quickly as one would expect File Explorer to respond if it were developed by sane people. You also get an Android-style permission system with Flatseal, so you can disable permissions for various applications.

One warning: keep in mind that if your desktop PC motherboard has a mediatek wifi+bluetooth chip, that chip will probably not work on any version Linux (AFAIK). I don't use wifi on my desktop but I do use bluetooth game controllers. You can replace the chip (which is what I did, with https://www.amazon.com/dp/B08MJLPZPL), get a bluetooth dongle (my friend recommends https://www.amazon.com/Bluetooth-Wireless-External-Receiver-...), or get a PCIe one.