A rare success story with a $25 online doctor was having them confirm my knee pain was from squatting wrong at work and how to correct my form and which exercises to do while idling. It helps that I had the background to google the muscle anatomy of the knee, pinpoint which muscle / ligament felt wrong, then google what usually causes that, see frequent squatting on the list, and immediately correlate that to the experience of being a nurse on a unit where none of the beds are motorized (on a proper medical unit the beds just raise the whole patient to working height. I have to get my whole self down to that level if a patient requires more intensive care, which is why we're not supposed to get patients that need ADL assistance but I digress).