elementary OS 5.0 Juno works perfect on my 15" inch late 2008 MacBook Pro when I run the OS on USB stick. In particular, the wifi works flawlessly.

So why does wifi not work after elementary OS 5.0 Juno is installed on the hard drive? The wifi will not work and won't attempt to try and use it. That makes no sense to me and is a pretty bad bug as I installed the OS based on favorable USB bootable stick experience.

Definitely need a new elementary OS to download as if my wifi doesn't work, I cannot download any bug fixes to fix it.