If you turn on hearing aid compatibility, you will not be happy the first time you receive a call...
Settings > Battery > Battery optimization > tap 3 dots > Advanced optimization.
Check that both settings are off.
And I don't know about...
Which version is your camera app?
Ok, but the OP7 series would still get open beta Q first, and that would be after Android Q final is released.
Based on last year with pie, you'll need to wait at least a few months for open beta Q on the OP6/6t.