Downgraded MacOS to Mojave how do I tell the App Store to forget I ever installed things on Big Sur?
104705
Mac App Store: Downloads just don't start (Mojave)
77596
How delete an application that is bundled with macOS?
62503
New Macbook Pro - remove "high sierra", install "sierra"
4309
How can I download an older version of OS X/macOS?
155866
How to remove annoying iCloud nagging in Catalina?
34416
Remove preinstalled apps on Big Sur MacBook Pro M1
117029
Can the previous version overwrite the currently installed app?
93727
Why can't I find OS X Yosemite in the Mac App store?
34612
How to stop creating .DS_Store on Mac?
151690
How do I downgrade from Yosemite 10.10 to Mavericks 10.9?
107546
App Store asks for old Apple ID when installing updates
84717
How can I disable the red Software Update notification bubble on the System Preferences app in MacOS Mojave (not App Store)?
8401
Downgrading MacBook Pro 16” to Mojave
3612
Can I downgrade to Mavericks after installing Yosemite (beta/developer preview)?
211
Can I skip over releases when upgrading?
28172
I want to downgrade from Yosemite 10.10 to Mavericks or previous operating system
38407
Allow applications downloaded from anywhere in macOS Sierra