I found out with some iterations you get raw videos.
First check if negative filtering works. If not, give up straight away or use a different search engine.
Then add the term `-news`. This filters out a lot of these videos, but not all.
Look at the video headings. Most of them contain the name of the company. Add about three to five of them. Like this for example: `-NBC -"Fox Weather" -Guardian -CBC -CNN`.
Then just scroll about three pages till you find a raw video, or add more negative terms and repeat. Be careful not to accidentally exclude raw videos, for example if there is something about people guarding something, don't use `-Guardian` but perhaps `-"Guardian News"`.
Or just give up and don't watch Internet videos.