Apple - How Do I Permanently Disable Hot Corners on Mac?
Yes, there are some terminal commands to set your default setting to "none".
Disable top left hot corner:
defaults write com.apple.dock wvous-tl-corner -int 0
Disable top right hot corner:
defaults write com.apple.dock wvous-tr-corner -int 0
Disable bottom left hot corner:
defaults write com.apple.dock wvous-bl-corner -int 0
Disable bottom right hot corner:
defaults write com.apple.dock wvous-br-corner -int 0
In the “wvous-XX-corner", for the XX, tl is top left, tr is top right, bl is the bottom left, and br is the bottom right.
For the numbers at the end, “0” is nothing, “1” is disabled, “5” is start screen saver, “2” is Mission Control, “3” is Notifications”, “4” shows the desktop, and so on.