Practically every video that demonstrates "how to", makes it sound as easy as possible. That Park Tool demo shows the bike on a stand.

Also , there are the "hard to" get off types, where somebody earlier really tightened the pedals unnecessarily. Maybe there's a video on that already.

Most always, the demo involves a man with sufficient muscle to do the work, whether its fixing a flat, or something else. Get a size 5'-2" rider weighing 105 lbs. and watch her do the demo.

hard to get off is accomplished by riding the bike

A little bit of heat on the end you put the wrench on from a hot air gun works great. You can use a torch but a heat gun is safer

OK, so add in "hold the wrench above the pedal:......fixed.

played w my new/old pedal wrench last night. removed 6 pedals from 3 bikes & lightly applied a trace of anti-seize with an extra small model paint brush I found. the rd bike was the one w the stuck pedals. but knowing exactly which way to turn them & having the correct tool made it much easier. one bike I did on the stand, cuz that's where I'm storing it. too many dam bikes, lol. helpful to press against the pedal & crank arm on the other side. the video I followed puts the pedal you're working on facing forward & you have the wrench at the back going down. this works on both sides. you don't have to remember which one is clockwise or counterclockwise