Disable Record Computer Sound

I want to record my voice when i playing the game or music on my computer.
But the sound of the music or game is also recorded to.
How to disable it ?
I just wanna record my voice.

Make sure Audacity is trying to record your microphone and not another system or software service. For example, if you like to record YouTube audio, many times the settings for that will record everything, not just YouTube.

What’s your microphone?


How to setting it ?
Im using headphone gaming microphone.

In the device toolbar.