This article explains how to disable Quick Notes and how to change your Hot Corner preferences.
How do I disable Quick Notes in Macbook Pro, AIR and iMac?
If you're using macOS Monterey or later, Quick Notes are docked in the lower-right corner of your screen. When you move your cursor to this corner of your screen, a small white box appears, allowing you to create a Quick Note. The only way to prevent this is to disable Quick Note as a hot corner in System Preferences.
The same setting is available in macOS 13 and later, but Apple renamed System Preferences… to System Settings… and moved some items around.
From the Apple menu, go to System Preferences…
