So where is everybody?
Welcome to the Fermi Paradox.
The Fermi Paradox exists because just looking at the mathematics, which says there should be many thousands or even millions of higher civilizations, that at least one of them would be an exception to the rule and have life.
If there are no super-advanced civilizations and since the sums suggests that there are thousands of them in our own galaxy alone, something else must be going on.
Possibility — Higher civilizations are all around us but we’re too primitive to perceive them.
Possibility — we’re unbelievably wrong about our reality.
Possibility — It might be incredibly unusual for life to begin at all.