Request a mathematical/logical basis for a situation come across

[Trebor]

@bkpsusmitaa

I eliminate the noise with itself.

There’s not going to be any noise-reduction where PopMute has muted: no cancellation.
You may as well use a noise-gate to attenuate/silence the noise where there is no signal only noise.
https://manual.audacityteam.org/man/noise_gate.html

[PopMute is an upside-down noise-gate].