Here is how to do it in about five days...maybe.
Go here: http://packages.ubuntu.com/
Select your Ubuntu version, i.e. Jammie, Kinetic, etc. in the drop-down box. Search for bc, dkms and build-essential. Be sure to locate their dependencies and the dependencies of the dependencies. Once you've download about fifteen or so packages on another computer, transfer them with a USB stick or similar to the desktop of your Ubuntu computer. Open a terminal and install them:
cd ~/Desktop
sudo dpkg -i *.deb
It may complain that a package is missing a dependency. If so, download that and add it to the desktop and try again.
Write many posts to tell old Chili how you're stuck. Rinse and repeat.
Once that's all done, get this: https://github.com/morrownr/88x2bu-20210702/archive/refs/heads/main.zip Download it and then transfer it to your desktop, too. Right-click it and select 'Extract Here.' Now, back to the terminal.
cd ~/Desktop/88x2bu-20210702-main
sudo ./install-driver.sh
Reboot. Your wireless should now be working.