If you're not sure if you truly started in safemode, try it again. After you've held the power button and then see the startup disk icon, when you press the shift key, the text under the disk icon changes to say startup in safe mode. Then when you log in with your password, in the upper right corner of the screen, it should say Safe Mode in red text.
Safe Mode - Apple silicon
- Shut down your Mac. (Wait for 20 seconds)
- Turn on your Mac and continue to press and hold the power button until you see the startup options window.
- Select your startup disk, then press and hold the Shift key while clicking “Continue in Safe Mode.”
- Log in to your Mac. You might be asked to log in again.