Try these and let me know if it still doesn’t work:
-https://support.apple.com/guide/mac-help/open-a-mac-app-from-an-unidentified-developer-mh40616/mac
-youtube.com/watch?v=i9TtoOJjGpU
Try these and let me know if it still doesn’t work:
-https://support.apple.com/guide/mac-help/open-a-mac-app-from-an-unidentified-developer-mh40616/mac
-youtube.com/watch?v=i9TtoOJjGpU
What happens if you right click OutsideVoice and select Show Package Contents->Contents->MacOS, right click Use Your Outside Voice (the only file in this directory) and try Open or Open with Terminal? If that doesn't work, can you right click/get info on it to see what "kind" of file it is being registered as?