On that one the main culprit is 79Hz , (& harmonic at 158Hz ) …
The pitch is changing slightly with time : maybe a fan ?, or other electric-motor ,
( So it’s not mains hum, whose pitch is very constant ).
Notch-filters are only 100% effective when the pitch (frequency) is constant.
Your [female] voice doesn’t contain frequencies below 150Hz , so using the equalizer you could remove all content below 150Hz , which will remove the deep parts of the humm noise …
In addition you’d have to apply a notch-filter to remove the 158Hz tone.