You can download Airtube app. Which enable android user to play background playback for YouTube. You can also download video form YouTube with this app.
Playing videos in certain browsers (iOS)
How to play YouTube in the background using YouTube Premium
With YouTube Premium, you can watch millions of videos without interruptions by ads before and during a video, including video overlay ads. You will also not see third-party banner ads and search ads. You may still see branding or promotions embedded in the content by the creator and promotional links, shelves and features in and around the content that are added or enabled by the creator. These links, shelves and features could be for their website, merchandise, a membership to their channel, event tickets, or other related destinations they are promoting.
YouTube Premium (Android, iOS)
Do you wish to play YouTube videos in the background on your phone without paying the subscription fee for YouTube Premium? Well, the official YouTube app for both Android and iOS doesn't allow this but there is a quick workaround to get this done. Playing videos in the background is convenient if the video part of it is not critical — for instance, if you're listening to music or ASMR.
Closing the YouTube app will stop the video from playing, but there are a few simple workarounds that will allow you to listen to a video in the background. Better yet, there are ways to get a mini pop-up YouTube player while you browse elsewhere. Looking for music on YouTube to listen to in the background? Perhaps you should take a look at our guide on how to download music from YouTube and listen on any device. Red is dead — Premium is the future.