The Dark Forest and the Fermi Paradox: Why Civilizations Might Hide from Cosmic Hunters

To the point

The Dark Forest theory, proposed by Liu Cixin, argues that advanced civilizations stay hidden to avoid being attacked when discovered, a grim answer to the Fermi Paradox that many scholars view as speculative and contested.

The Dark Forest theory explained
nationalgeographic.com

The Dark Forest theory explained

The Dark Forest theory is just one explanation for our lack of encounters with extraterrestrial intelligence.