Who is God? Who are people? Why should i belive the GOD ?

Why should I believe in God???? For a moment, I thought about what I should say when someone asked me this question. Then I asked, what is your reason for not believing in God?. Then he started telling me. I went to temple many times in my childhood. Many times I prayed to God. But what I thought never happened. Where is the obstacle? Not getting things done. This happened many times. When I prayed, I was very attentive. But what I wanted did not happen. Does that mean there is no God?? . Then why should we believe in God?. Then I thought for a moment about the feeling I had. I thought for a moment that he would listen to what I said. For a moment, I remembered a verse from the Bhagavad Gita. I started to say. If you really believed in God, you would not have this doubt. I said this happened because of your distrust. I told to that person is that what Krishna said in Bhagavad Gita. Do your work properly and leave the result to God. When you do your job properly, then you don't need me. If you seek God in work, God will praise you as long as you turn your eyes.  I remembered what God had said,  that there is no place in this world where I am not. I am everything. Human beings with their natural indolence seek God somewhere. I am with you from the beginning of creation till now. I am in you. You don't realize that, you are trying in vain for me. He started an argument on what I was saying. When there is God in me, I become God, and then whatever God wills, it happens. And why is it not happening to me?. Any work without practice is fruitless. Believe in yourself before believing in God. God would have been with you if you had paid attention to your work even a little bit in your efforts for God. Although I am not at the level of talking about God, I am confident that I can remove most of your disbelief in God. Your faith is your salvation, says the same verse. When you lose faith in yourself, then you lose faith in God. Only one who can see the soul separately from the body can know God. He who knows that the soul is immortal can only know the feeling of God. A man believes in God only when his capacity is not enough, even after using up his energy completely. Without belief, there is no self-satisfaction. A human does not have the minimum knowledge, even if an animal has it. An animal has a definite impression of what it wants without touching it. But man has not got that knowledge, till today. Hope makes a man small. When man loses his individuality, he becomes worse than an animal. Man forgets God when he is unable to know himself. In such a state, God manifests His presence. Indeed, man can think so perversely that he can blaspheme any God who helps. That is why God works miracles when He reveals Himself. That is why he is God. We are human because we cannot understand it