Coaches & Fighters: How are you reviewing/analyzing sparring or fight footage?

A question I have for coaches, fighters, and anyone in between.

Coaches, how are you reviewing and analyzing your fighters footage after a fight or sparring? Are you just doing a replay with your fighters, taking notes, or just giving verbal feedback?

And fighters, are you recording yourself during sparring and analyzing your footage? How often do you watch footage and is there anything you look for specifically?

I'm asking as fighter myself, so far I've just been watching the footage our gym takes on the security cams but it's not the best.