Use the YouTube app’s offline download feature if available in your region and on your device
Open the video in the YouTube app
Tap Download
Choose the quality if prompted
Wait for the download to finish
Open YouTube Library or Downloads to access it offline
If you need the video in your phone gallery, use a legal download source or the creator’s official download option
Save the file to your device storage from the official source
Open your file manager
Move the video to the DCIM, Movies, or Downloads folder if needed
Open your Gallery app and check the video there
Use YouTube Premium for offline viewing where supported
Avoid third-party download tools that may violate YouTube’s terms or copyright laws