Standard Windows backgrounds can't play animated "packs" on their own. You first need one of these tools:
: Available on Steam, this is considered the gold standard for gaming setups because of its massive library of user-generated content. Download Gaming Live Wallpaper Pack zip
Once your player is installed, you can download packs or individual files from these sources: Lively Wallpaper - Download Standard Windows backgrounds can't play animated "packs" on
: A popular open-source option available on the Microsoft Store. It supports hardware acceleration and can even turn websites into wallpapers. Download Gaming Live Wallpaper Pack zip