Is Venus a livable planet on earth or corot-7b 3 billion years ago?

Because of the Big Bang, our present universe was born, and many planets were born in our universe, including our earth. For our earth, there were five mass extinctions hundreds of thousands of years ago, even millions of years ago. These mass extinctions caused certain losses to the biodiversity on the earth, and also made some creatures evolve and even die. Only human beings, as a kind of intelligent civilization, lived on the earth from the beginning, so some people suspect that we humans may have immigrated from other planets, because there is no good conclusion about the origin and how we came from, and there is no clear evidence to prove that we exist on the earth and evolved slowly through some creatures on the earth.

In order to find out how humans came from, scientists have been exploring and studying our earth, our solar system and even the whole universe, but until today, people have not made any good progress, and we know very little about our solar system, the Milky Way and even the whole universe.

Some people say that 3 billion years ago, our earth was like a corot-7b. By studying some fossils on the earth, scientists found that 3 billion years ago, because there would be some life on the earth, our earth was like a hell star. At that time, the earth was full of methane gas, toxic gas, volcanoes and even oceans, devouring the land where it landed.

In recent years, scientists have found that there may have been some life on Venus before, and even the civilization of these lives is more developed than ours, but this is only a rough guess, and there is no effective evidence to prove that it really exists. It has also been speculated that we humans may have migrated from Venus to the earth, because the cautious environment at that time could not allow human beings to survive, and you are still migrating to the earth, but these guessers have no evidence to prove it.