Why can't i control microphone level in Audacity?

I can't control microphone level in Audacity? Any solution?
Ekran Görüntüsü - 2024-11-01 19-27-01

See if any suggestions here help:

https://www.reddit.com/r/pop_os/comments/uxqo1s/upgraded_to_2204_now_having_trouble_recording/?rdt=55502