@David-TP Thanks for your reply. No, the MacBook could NOT be found via AirDrop when trying to send something from my iPhone to my MacBook or vice versa, and the Internet indicator in the Menu bar...

I just purchsed an Archer T3U Nano USB adapter to replace the non-functioning built-in wifi on my MacBook Pro running macOS 10.15.7 but, after successful set-up and restart, I can no longer use...