@Jtadych5 do you mean download video or music from youtube? I don't know with anyone else, but I love using Snaptube because it's really simple and have a lot choice resolution and at least 2 format video (MP4) and music (MP3/M4A) you can download, for more details you can try to download the APP/APK from here MOD APK - SnapTube - YouTube Downloader HD Video 4.44.0.4443610 Hacked (Updated)
I hope this app will help you.