Hey there. I can’t get Audacity to recognize external OR internal mic. Other apps do it fine. Send help!
The current version of Audacity is not officially supported by Catalina (the next version will be).
For now you have to use this workaround: https://forum.audacityteam.org/t/audacity-2-3-3-under-macos-10-15-catalina/54279/1