Use the YouTube app or website and check whether the video has a Download option
If available, tap or click Download
Choose the download quality if prompted
Wait for the download to complete
Open your Library or Downloads section to watch it offline
If you have YouTube Premium, use the offline download feature in the app
If the video is your own, use YouTube Studio to download it from the Content section
If the video is not yours, get permission from the owner before downloading it
Follow YouTube’s Terms of Service and copyright rules