Did anyone see the Aliens movie [ Prometheus ] ? In that movie, tall ,gray , muscle bound , bald humanoid [Creators] as they are called , came down to Earth, spread their DNA in the rivers ,starting evolution and leading to humans. Now it's not far fetched to say that Aliens created humans , fact is , Humans haven't even been able to go past the solar system , heck humans haven't even stepped foot on Mars, to put it lightly humanity is still a stone age species in comparison to space age technology. It's going to be 100-200 yrs before humanity can even explore the milky way galaxy and there are about 50 billion observable galaxies out there , and obviously there are trillions that haven't been discovered. What I'm saying is, there could be many Tier 4 Alien societies out there.
Sidenote - I'm also holding out hope that there are super powered beings in existence like Super Sayians or Thanos .