What conditions turned out to be necessary for the emergence of life on Earth?

The main condition for the origin of life on Earth was water.
It was in the water that the first life was formed. They were microscopic creatures. Over the course of long millions and billions of years, they evolved and got out onto land. Another important phenomenon was the emergence of oxygenated air. Oxygen was produced by the seaweed during photosynthesis.
Air temperature is also important. If the planet was cold, then the water would be in a state of ice, and no one would ever appear in it.