Reducing booming

IMO you’ve overdone the de-essing a little : “once” sounds like oneth.

I hear that. I am using your (Trebor’s) DeSibilator at

with Koz’z direction to “Select your performance and find the RMS (loudness) value. Analyze > Contrast > Measure Selection (write it down) > Close. Plug that into the DeSibilator “Threshold” setting. > OK.”

What should I do to dial this back?

you could remove more bass, (<200Hz), as most of the room-reverb lives there.

I’ve already applied Koz’s “de-boomy” equalization from https://forum.audacityteam.org/download/file.php?id=31565. To take out more from below 200Hz, do I instead just make the graph fall off for everything from 200 Hz down? Or is there a preset that will do this?

Dare I mention the mic clicking ?

Oh yes, please dare. These videos will hopefully last on Udemy for decades, and this is my one chance to get them right. What do you recommend?