My son 20's years age says he is athiest. As perants what is out responsibility, as in to hold his responsibility education and other wordly responsibilities. As parents how should we behave with him

Please find a good reliable Maulana or a scholar who has good knowledge of Islam and can have ability to talk with your son and please find out the core issue why he became against the Religion. Is there any question in his mind that he has not received proper answer or any traditions or custom which he saw and didn’t find any logic behind him. Also please check his friend circle and social medial friends.