Not all people believe in God, but all everyone should believe in God,
because we are all created by God. We do not exist by ourselves alone. So every human being must believe in God, first of all, because we were created by Him.
There are other people who do not believe in God, and the Bible tells us so.
Psalms 53:1 - The fool had said in his heart, there is no God. Corrupt are they,
and have done abominable iniquity:
There is none that doeth good.
According to the Bible, those who are called by God as fools are those who do not believe in God. They are people without understanding. Those who do not believe in God are people who are not using their minds. There must be somebody who created us. If you are going to study the wonders of the human body and its components you will come to know that our being was designed by a very intelligent creator.
God is the creator of everything that exists. So people must believe in God.
We are created by a very intelligent designer and that is God. We did not just exist just like that by accident. There was a God, a superior being who created us and has designed our being.
https://youtu.be/atoAgkWV0UQ?si=ViCXWgImcIXLoqDZ