Animated GIFs should (mostly) work on Android. Most of the problems mentioned in Animated gifs are not working properly #7021 are either for other platforms or already fixed in current versions.
The remaining Android problem is Animated gifs do not start initially #7019, and that affects only the initial startup. Until that is fixed you can work around the problem by setting IsAnimationPlaying from code instead of from markup: set IsAnimationPlaying to false in XAML then true in (for example) your ContentPage.Loaded event.