This process is ridiculous. I'm 3 hours in and I can't wipe this Mac.
how do you wipe a MacBook Air to get it ready to sell?
MacBook Air 13″, macOS 12.4
Question marked as
It depends on which model you have.
If it is fairly recent, it is extremely easy: System Preferences->Erase Content and Settings.
Otherwise, follow the instructions here:
What to do before you sell, give away, or trade in your MacOfficial Apple Support › en-us