If you just want to be able to adjust the camera settings, your best bet is probably to use Logitech’s software. For my camera (Logitech C930e), the Logitech Camera Settings app does the job…but doesn’t support presets. Logitech may have other software options for newer cameras. I recommend getting in touch with their support.
My main reason for using Webcam Settings is that it allows the saving of presets. It recently received what looks like a fairly minor update that includes support for Catalina. I haven’t used it extensively since the update, but initially testing suggests that it works ok.