If needed, click the Lock icon, provide your admin password and click Turn Off FileVault. For this, open System Preferences, go to Security & Privacy → FileVault. We’ve tested and checked how it works on macOS (Big Sur and Monterey) and added additional steps for a safe experience.
This guide is based on the user’s experience on StackExchange. Steps to uninstall default apps on macOS Big Sur and Monterey
If you use earlier versions of macOS, here is how to enable SIP: restart your Mac → use Command+R shortcut → open Terminal and this time type the command csrutil enable. However, note that on macOS Monterey, the apps can be restored after enabling SIP. Usually, after deleting the apps, we recommend enabling back the System Integrity Protection in order to not remove other important apps by mistake.
Although you can download Safari or iTunes from the official Apple website, other important programs are not available to be restored. It is prohibited to delete standard applications in a regular way due to the fact that the removal of built-in applications may damage the viability of the system. If you have tried to uninstall Safari, Photos, Mail, iTunes, or other standard macOS applications, you might have seen this error message about the impossibility of deleting these apps because it’s a requirement of macOS. Why are default Apple apps protected from being removed
If you uninstall default system applications, they can be restored when you update or upgrade your macOS.If you don’t use them, they don’t accumulate caches or other service files and as a result, they don’t take much space on your drive. Generally, you don’t need to uninstall default apps from your Mac.Important notes about uninstalling default applications on Mac