Ts, Hashem told us the purpose of creation very clearly. Goyim like to wax philosophically about it and ponder “mysteries”, and imagine in their olam hadimyon, all sorts of fantasies, many of which include alien civilizations far more advanced than ours. This is all from a materialism mindset.
Jews don’t float through life pondering the meaning lf existence and wondering if there are parallel dimensions and other universes where there are different versions of ourselves, or if somewhere some aliens are watching us, and what they might think of us.
This is all a godless worldview. Hashem created people to give them the Torah and through it to obtain olam haba/shlaimus. Aleph bais of yiddishkeit. That precludes alien civilization or bechirah creations who wouldn’t have a Torah. And there can’t be “another torah”, because that’s against the 13 ikkarim.