Downloading paid Youtube videos

I wanted to download a movie on Youtube that I had to pay for, I paid for it but the download didn't work and download a document that had information about the movie like the cast, director and how much the film is. I would like to know if there is a way to download pay to watch Youtube videos like "Star Wars: The Last Jedi" which is the film I want to download so I can re-edit the entire film, if it's a copyright issue then I would understand.