Deleting Applications

What is the error you're getting when you try to delete these apps?

You might want to boot in the safe mode and delete the apps from there

Start up your Mac with Apple silicon in safe mode

1. On your Mac, choose Apple menu  > Shut Down.
2. Wait for your Mac to shut down completely. A Mac is completely shut down when the screen is black and any lights (including in the Touch Bar) are off.
3. Press and hold the power button on your Mac until “Loading startup options” appears.
4. Select a volume.
5. Press and hold the Shift key, then click Continue in Safe Mode.
6. The computer restarts automatically. When the login window appears, you should see “Safe Boot” in the menu bar.

Start up your Intel-based Mac in safe mode

1. Turn on or restart your Mac, then immediately press and hold the Shift key until you see the login window.
2. Log in to your Mac.
3. You might be asked to log in again.
4. On either the first or second login window, you should see “Safe Boot” in the menu bar.

I prefer the uninstaller app AppCleaner. Free, safe and does a very complete job.

Most Apple apps can't be removed, the three office suite apps can be as well as GarageBand. The rest of the Apple apps you need to ignore if your don't need them.