Re: noise removal …
https://forum.audacityteam.org/t/experimenting-with-a-noisy-audio/16997/2
https://forum.audacityteam.org/t/audacity-noob-needs-help-with-filtering-noise/16185/3
Below is the equalization “curve” for a 300Hz -3000Hz band pass filter …
You could try something a bit wider first, e.g. 200Hz - 5000Hz