YouTube now supports the feature of downloading videos to watch while offline. The YouTube download feature is quite interesting as it can also suggest and download interesting videos based on user activity. Most recently, YouTube tested Shorts Smart Downloads.
Like regular YouTube videos, this feature will suggest and immediately download Shorts videos that users might be interested in. YouTube uses activity history to download appropriate short videos. This feature can be accessed by going to the You tab, scroll down and tap Downloads, then turn on Smart downloads. You can also limit how many GB this feature can download videos as well as set the video quality.
Videos will only start downloading after a certain number of Shorts have been watched. This feature is limited to YouTube Premium users using Android devices only. This feature will also only be tested until July 15th before YouTube decides whether to give it to everyone or not.