1. Press and hold the Home button for two seconds. A list of recently used applications will appear as a result of this action. Because these programmes aren't closed, they continue to operate in the background.
2. From the app's preview, find the YouTube app and swipe it.
It's also a good idea to force background programmes to close. These programmes can also create issues with other apps, particularly if they have crashed.
Perform a soft reset or restart your smartphone after removing YouTube and other programmes to eliminate any minor system problems and refresh the internal memory.
