It turns out that it's quite difficult, because people modify the videos before re-uploading. Search YouTube for something like "Bob's Burgers full episode" and you will find plenty despite the uploaders not having the right to upload those videos to YouTube. And if you look in a week, those exact video files will be gone, but the same episodes will all be there again, with different edits and different uploaders. It's a hard problem to solve, that even the biggest tech company in the world is not entirely successful with.

But they are very successful taking down my dashcam video, because there was a song that played in a radio. And of course, appealing is automatic so it doesn't work either.

Yeah, you didn't edit it in any way to disguise the song. In these pirated videos on YouTube, any music sections are replaced with different music. It's quite weird.