YouTube is the world’s biggest video sharing platform, and among the most popular websites in India and the rest of the world. In 2014, YouTube launched the feature that allows users to download videos to watch on their mobile devices, giving them a respite from the spotty Internet that used to ruin their video viewing experience. Many YouTube videos can be downloaded nowadays but it works only on smartphones, i.e. the YouTube app for Android devices as well as iPhone and iPad, and the videos cannot be downloaded on desktops. You have until 30 days to watch the downloaded YouTube videos after that videos will remain in your Downloads section, but cannot be watched and will not be deleted on their own.
Open the YouTube app and tap on your profile on the top right corner. Now go ahead and tap Settings. On Android, open the Downloads section, while on the iPhone and iPad, you need to scroll down to the Offline section. Here, just tap Delete Downloads to delete every offline video on your device at once.