first get rid of the loud buzz with dynamics processing. highlight the buzz, then drag the freqs down to isolate them.
then, highlight only buzz, no talking.
then right click learn sound model
then go to effects- noise reduction
sound remover process-fft size 512
then use the healing brush to smooth out jaggied pixels in spectral freq view.
play with the settings, I got it down to almost non-existent. i’ll try izotrope later.