Download video youtube

Help, I need to download a long video from YouTube without losing quality, where can I do it?

This site helped me a lot in my time https://easytube.pro/ . It is indispensable in this topic, it has all the necessary functions that are needed for comfortable and fast conversion of YouTube videos to mp3 and for downloading videos. And what surprised me was that the site also has functions for downloading videos from several other social networks