HOW do i TAKE SCREENSHOTS so THEY auto-saves all the time

since I can't and won't and don't like to press pr-screen, ten paint. So it's only 1 screenshot and I can't prove anything with 1 screenshot

Also how do I TAKE A MOVIE SO I PROVE I WON OWER MY ENEMY CUZ I CAN'T PROVE IT WITHOUT MOVIE

sorry for caps