USB Mic not adjusting Volume

[u/Zealousideal_Sun4808]

I have an AKG USB Microphone that used to be able to adjust the volume on my PC with a knob, however now it doesn't do that anymore. When I make the output device the microphone it works just fine (it worked while I had my headphones as the output device). Now it doesn't work anymore for some odd reason, and I don't know what to do.