1. Always remember that just because you are experiencing an issue does not mean everyone is.
If you've recently upgraded to Catalina or transferred your data to a machine running Catalina, it's possible you've run into a permissions mix-up. First, try restarting the machine. Second, try updating to today's bug-fix release of Catalina (10.15.2). Third, try running
OnyX to see if that fixes the issue.