Random thought, what are the odds beings from a different planet and galaxy looking anything like humans???!!

I’ve done some thinking into this topic recently, and find something strange. If being traveled from a different planet, that planet being completely different than our own. Different amount of gravity, air, nitruients, etc. To think alien could come here and look offly similar to man is seemingly irrational. If evolution is indeed somewhat random, that odds of that are insane.

My belief has always been these being have been here from the start, and are spiritual in nature. But what do you think?