There are several free applications with which you can do this.

And I was able to download audio this way, but then when I wanted to download video))

And in general, YouTube is what interests me at the moment. In particular, this concerns such issues as https://gyre.pro/blog/mastering-the-youtube-official-artist-channel-the-complete-artist-guide or rather, I am interested in the answers to these questions that I find in such articles.