Have you tried clearing the system cache? It's not hard to do and may fix those issues. Power off phone>HOLD POWER+VOLUME UP+BIXBY at the same time until you get the a boot screen. About 5 seconds. Using the volume rocker, scroll to reset/clear partition data. Use power button to accept.
You should do a factory reset of your phone and choose the fresh start option when setting it up instead of restoring from a Google Cloud Backup. If you do this all of your Android 10 problems will completely go away.
At first I was just thinking this was a generic troubleshooting step (that's never honestly worked for me before now) but I actually do have to admit this factory reset has really done its job and made my phone usable again as far as I can tell. @Samsung_BbvXXRb