Audacity not getting sound from computer

Another newbie here. Trying to setup, but unsuccessful so far. Computer registers sound, but I can’t get Audacity to recognize any input. None from either USB mic or built-in mic.

macOS Big Sur 11.3.1 on MacbookPro early 2015.
Audacity 3.0.2 (from launcher, did get rid of/eject .dmg. Rebooted after install.)
Microphones: Blue Snowball Ice and built-in.

ETA: I figured it out. The software needed permission to access the mics under privacy settings.