Input or Output device

Reset PRAM:  Reset NVRAM or PRAM on your Mac - Apple Support

Reset  SMC:   How to reset the SMC of your Mac - Apple Support   Choose the appropriate method.

Section: Use macOS audio drivers and other sections.

https://support.apple.com/guide/audio-midi-setup/if-your-audio-apps-stop-working-amsfa3961363/3.5/mac/11.0

If this doesn’t help, contact Apple Support:

 https://support.apple.com/contact

Jacsch wrote:

Happy Sunday, all! I am having issues with my sound. I cannot find an Input or Output devices on my Sound. Are there any suggestions

If the internal speakers on your Mac aren't working