This “simple” trick to get rid of a background in Keynote in order to build overlays eluded me until today. Maybe this will help you if you also didn’t know about the subtract trick in Keynote for macOS.
Using Audio Hijack and Loopback together you can improve the quality of your mic for all the Zoom, Skype, Discord, or Microsoft Teams calls you're having to do these days.
In this tutorial video I show yet another possible fix for Discord's inability to pick up your mic's audio.
In this tutorial video I cover why I use Loopback, how Loopback compares to Audio Hijack, and ways to consider using Loopback for podcasters on macOS.