Do god really exists ? Human's made the concept of god so the existence of humans and this world can be clear

Like if a boy born and left on the island where he grows through the mean of nature and natural resources without getting any feeding through the humans in terms of thoughts does that boy has the thought that this world is made by some specific god named or he is going in hell or heaven he will evantually try to think that where does the humans comes from and he'll try to get the answer but could'nt because no one has fed that thing in his mind that the world is made by some god of some specific religion so he could'nt get the answer so like wise we human should think that the concept of this pro gods comes when the thinkers just can't get the answer of the human existence so their critical thinking made them to specify things and get to a point where they made the conclusion of some specific god and that is being followed and modyfied day by day . But actually if some devine power truly exists why would he say if you'll not obey me than you'll get the hell like this is just for the moral torture to the guy's who are misusing the power rather it's nothing more than a thought . and if the thought of hell and heaven get removed by the head of humans the thinking about the god will also vanishes and everyone will do whatever they want so to keep up with good morals they come with the concept of the heaven and hell .