Any Third Party Applications that will interfere with the normal operation of the OS, is an invitation for disaster.
Certain Applications maybe available on the Apple Apps Store - this only means the Developer is prepared to pay Apple a percentage on each sale.
Disk Cleaner
CleanMyMac , aka “ BrickMyMac “
PS - the computer will never be the same after using this type of Application
My colleague @ Ingo2711 has suggested 1 of 2 methods to resolve this issue probably caused by CleanMyMac
The other way is more intensive
Once this type of software was installed and used on this computer
Start Over from Scratch
Heavy Handed ? - Yes
Effective ? - Yes
For Apple Silicon computer >> Use Disk Utility to erase a Mac with Apple silicon.
For Apple Intel computers >> Use Disk Utility to erase an Intel-based Mac followed by How to reinstall macOS
Always make a Time Machine Backup before proceeding
Emphasis on User Account Only
If going this route - I suggest Not using Startup Assist to migrate everything back.
This will probably Re-Introduce ( CleanMyMac) back into the Operating System .