The official way is using YouTube Premium. Open the video in the YouTube app, tap the Download button below the player, and select your desired quality. You can find saved videos under your Library > Downloads tab to watch them offline.
Using YouTube Premium is the official method, which entails opening the YouTube app, choosing your video, and tapping the Download button beneath the player. The video is saved in the Library/Downloads section of the app for offline viewing. Alternatively, you can use third-party websites or a file manager app like Documents by Readdle for saving to your iPhone's files.
To download YouTube videos directly on your iPhone, you need a YouTube Premium subscription, which includes an official offline download feature. For free alternatives, use apps like Documents by Readdle with its built-in browser to save videos, though this may violate YouTube's Terms of Service.
