On an Apple device, a question mark appearing inside an icon box usually indicates that the app associated with that icon is missing or cannot be located, often happening when an app has been deleted but its icon remains in the dock or on the home screen; this is a signal to either reinstall the app or remove the orphaned icon.
Have you run Disk Utility's Disk First Aid on all connected drives?
In Disk Utility>View, select Show all Devices, highlight the top left entry.
Run Disk First Aid on all items in the left panel, from top down.
Are you running any VPN, Anti-Virus, or Cleaning apps?
We need to see what all is running, a report from this will not display any personal info...
Using EtreCheck - Apple Community
EtreCheck is a FREE simple little diagnostic tool to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac. It will not display any personal info. Give it Full Disk Access.
https://www.etrecheck.com/
Give etrecheck Full Disk Access before running.
Thanks for Old Toad’s etrecheck instructions…
https://discussions.apple.com/thread/255121100?answerId=259529290022#259529290022
Earlier versions of etrecheck...
https://macdownload.informer.com/etrecheck/versions/