Hello cb-Cl,
Thank you for using Apple Support Communities. Sounds like you’re experiencing some issues after updating your macOS. If so, we’d like to help out in any way we can. Since you’re already fully updated, we strongly recommend that you try starting up your Mac in safe mode. This step can help isolate possible software related issues: How to use safe mode on your Mac - Apple Support
Apple silicon
1.) Shut down your Mac.
2.) Turn on your Mac and continue to press and hold the power button until you see the startup options window.
3.) Select your startup disk, then press and hold the Shift key while clicking “Continue in Safe Mode.”
4.) Log in to your Mac. You might be asked to log in again.
Intel processor
1.) Turn on or restart your Mac, then immediately press and hold the Shift key as your Mac starts up.
2.) Release the key when you see the login window, then log in to your Mac.
3.) You might be asked to log in again. On either the first or second login window, you should see ”Safe Boot” in the upper-right corner of the window.
Depending on your results, follow the steps under “If the issue continues in safe mode” or “If the issue doesn't continue in safe mode”.
You might also want to check if your third-party apps also have new updates available. Feel free to keep us posted. Thank you for using Apple Support Communities. Take care.
