This article explains how to set live wallpapers on an iPhone by selecting Live Photos from the Photos library. The instructions in this article apply to iPhones running iOS 17 and later.
How to use a live wallpaper on your iPhone
To set a live wallpaper on your iPhone, follow these steps in your Wallpaper settings:
Tap Settings > Wallpaper.
Select the + (Plus) sign or Add a new background.