Tips on Editing Documentary Content

So here’s some context: I just recently started learning Adobe After Effects 2024: I’m actually quite good at it, issue I’m having is I can’t find what to have in the background when I’m explaining stuff. Not sure if I should be lazy and use stock footage or just actually go out and go get B-Roll. I’m a faceless content creator and prefer not showing my actual face due to comfortability. So how should I do this?