Could animals be the only indigenous inhabitants of earth ? could mankind have come from Mars ?

Yes, it is possible we are from Mars, or even all life is from Mars. A lot of rocks and stones from Mars came here to Earth like asteroids ...... and we even have found life symbols on Mars. Mars could have been filled with life before ... And maybe we are like a bacteria for the Earth. We are kinda destroying the Earth. Our Sun could be a electron ... and our galaxy is an atom ... and ...bla bla ...