If antimatter are repulsed by gravity, they might be in the outer shell of the universe being pushed further away. If antimatter also repulsed among themselves

If antimatter are repulsed by gravity, they might be in the outer shell of the universe being pushed further away. If antimatter also repulsed among themselves (??), then they won't have a chance to come together to create antimatter star. Most people believe antimatter attract just like matter, so it's a moot point.