This is an incredibly slow way to work. You cannot "play" the plugin. You are essentially shooting in the dark, hoping the settings you picked work for the specific phrase you sang. It turns the creative process into a tedious game of trial and error.
To get actual Auto-Tune functionality, you are required to install third-party plugins. Historically, this meant the plugin, though modern users often turn to Graillon 2 or MAutoPitch . auto tune audacity
When you compare Audacity's plugin capabilities to a dedicated pitch-correction suite, the feature set is lacking. This is an incredibly slow way to work
Touch a chord on a guitar or a harmony stack? Forget it. Audacity will turn your beautiful two-part harmony into a dissonant mess of intermodulation distortion. The tool is strictly monophonic (one note at a time). It turns the creative process into a tedious
Audacity is a brilliant audio editor, but a poor vocal tuner.
If you are a hobbyist looking to make a funny parody song or a heavy rap hook, Audacity with a free VST is a perfectly adequate tool. It gets the job done for the "effect."