>And recently I've discovered how horrible my network is at home and I doubt I can build a desktop unless I route ethernet wires through the walls. (Can't do that).

There are PCIe wifi cards or USB wifi adapters for desktops...

If you are building a new desktop there is even motherboards with wifi built in

Quick search on your fav search engine https://lifehacker.com/how-can-i-add-wi-fi-to-a-desktop-pc-1...

You dont have to use ethernet cables for a desktop! And where did you get this notion from???

Sounds like the best for you is to build a desktop or buy one as you are using laptops and desktop replacement anyway.

Thats said, ethernet is the best experience. With covid video calls it gets pretty obvious who has bad wifi and who has crystal clear ethernet wires (◕‿◕)