How do I write about something I know nothing about? Not that I'm an incel or anything, I just don't happen to know anything about some specific things.
I have some tropes/scenes/POV shifts which are from characters whose occupations or specialties require me to write about something I know nothing about. I.E., a detective, a stripper and/or prostitute, a military member, a stripper and/or prostitute, a teacher, or a programmer -- have I mentioned strippers and/or prostitutes?
How do I begin researching past a surface level to acquire knowledge on what truly makes those people's roles what they are, and not come across as a 20+ year-old virgin who writes stuff to jack off to (which, by the way, I'm not)?