There are mountains of scientific proofs of God, from Coded DNA to Eucharistic miracles, I have yet to find an atheist with an open mind no matter what evidence you give them, they won’t look at it reasonably. Try winning them over with Love teach them that Love is the reason they have a longing in their souls, teach them that the world follows the enlightenment movement that always end in hate as it is anti gospel tell them if they want to see this then open their eyes and see what is around them for a start last year 450,000 Americans committed suicide, Depression drug abuse anger etc etc are all fruits of enlightenment and the seeds are poison for the soul hence if you reject God you will serve the devil and today we call that devil humanism. etc etc etc. Good luck.