Thanks for the reply. Does the issue only occur on Skype and Zoom? Please try the following steps:
Enable the Microphone and set it as the default device:
Press the Windows key + R.
In the Run box that appears, type mmsys.cpl and press Enter.
Select the Recording tab.
Right-click your Microphone and click Enable.
Right-click it again and set it as the Default Device.
Right-click the Microphone, and click Properties.
In the Levels tab, drag the volume slider towards the highest value, then click OK.
Proceed to the Advanced Tab and uncheck the box that says "Allow applications to take exclusive control of this device."
Restart your PC and then check.