my baby is 1 month and the constant crying is making me excessively angry. So much that I want to hit him. How can I control this as a mother? What is wrong with me

You are just tired and over whelmed by the new role of motherhood. speak to your husband and seek his help with the baby too. I'm sure there are some elders in the family who can help you too. Don't worry, it's absolutely normal to feel agitated or frustrated. Whenever you feel so just take a few deep breaths to calm down.