How did you make the voice track? There is a sound adapter I call the Devil’s Adapter.
https://forum.audacityteam.org/t/devils-adapter/46592/1
It seems to be a no-brainer to adapt an XLR microphone to the side of your laptop, but it will produce this wacky cancellation effect.
There’s two adapters that do work. One 1/8" like this.
… and the standard club rock-band adapter like this…
Count the black bands on the long silvery plug (either one). It has one black band and not two.
If you have a cable with two black bands (top illustration) throw it out.
Koz