done.
haven't watched yet.
I use these 2 to download YT videos. They both usually work. I've downloaded 3 hour movies on the latter.
They want to throw some pop-up BS at you, but if you're half-way competent you'll get to a downloading mp4.
https://distillvideo.com/
https://youtubedownload.video/en8/
adding yours to my list.