I am 68, single, from Italy, "radical" Christian.
You ask for proof that God exists?
When the Pharisees asked Jesus to give a sign that He was the Son of God He refused. The sign was Him.
Prayers are not answered?
I doubt prayers from an atheist can be answered: you have to live the New Testament and become a disciple of Jesus and you will know different.
Atheism is just a faith like faith in the parallel universe.
The non-existence of God cannot be proved, and that's all there is to it.
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