macx-youtube-downloader recommend
I have been using the macx-youtube-downloader for years now and overall have had very few issues. I particularly like the fact that I can download complete playlists no matter how long, and that I can capture audio only. Quite useful. The two problems I had over the last year or so were related to upgrading my Mac to a new release of Apple software, most recently BigSur. When I submitted these to support via email I received a response within one day, and the problem was solved quickly. So I think it is a great app with a great support team.