When I use apps like Discord, Facebook Messenger, Zoom, and Google Meets to call people, it compresses the audio like it would in a normal phone call, even though using those same apps from the desktop give much better audio.

How do I go about making this audio sound better and not so compressed?

I'm using a Pixel 3 XL and am on AT&T (although most of the calls happen over Wi-Fi so I don't see how that matters).