The most useful info from the crash report is simply that it is not your main macOS system that crashed. It is the bridgeOS running on your T2 chip that has crashed. The T2 on your system is, amongst other things, responsible for image processing for the integrated camera.
Therefore it does not seem that looking into the GPU, integrated graphics switching ...
Individual Application sound control is only really possible using a 3rd party solution, such as Rogue Amoeba's SoundSource ($35)
There's also their more comprehensive, but at double the price, Audio Hijack, but I think that would be overkill.
I'm surprised their own suite even recognises it - it didn't when the C920 was new…
From Logitech's C920 page
Windows® 10 or later, Windows 8, Windows 7
Works in USB Video Device Class (UVC) mode with supported video-calling clients:
macOS 10.10 or later
Android™ v 5.0 or above
My Mac kept nagging after configuring a new iPhone. Despite turning WiFi calling on on the Mac, and rebooting, the nags kept re-appearing.
What finally caused a stop was updating my E911 emergency contact on the phone. No more Mac nags!