There is simply no shown detection any of the 3 USB wireless adapters, thus no "add driver" option. On my own PC I have found two files that I decompressed,
rtl88x2BU_WiFi_linux_v5.2.4.1_22719.20170613_COEX20170518-4444.tar
rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51.tar
However, where to put them and how to make Linux work with them I know not, and think the Kubuntu solution would be better.
I get it... Let me know if it works. In the meantime I will indeed chase down where to stick a driver file. But usually there is a “readme” or “install” text file included with directions. Once moved over to a Linux folder, Linux will let you read that file even though it is still compressed in the Tar package and not extracted yet. It should tell you where to put it.
Thing is, they keep moving those folders around in different versions. Correct folder, it just might not always be where it was when the directions were written. So some digging around to find that right folder is a normal thing. Wish they would quit that... But MS does it too. :)