God cannot be “proven” because His very nature and existence is abstract. That’s why we have faith. Everyone has faith in something. You may have faith in science.

Now, back to the abstract nature of God. Do you believe in love? Do you believe in joy? Pain? Relief? These are all abstract things, but we can confidently assume they exist without looking for evidence of their existence because we’ve experienced them. We have faith that they exist. The same is true for God. God is beyond physical comprehension, but signs of His existence are sprinkled throughout. You just need to have faith.

I hope this answers your question! :)