If he's new then your a threat, leave him alone for a couple of weeks. Let him see your hand delivering food, it takes time to gain his trust.
In just over 2 weeks our male has come from a terrified wreck who hides in the corner to a confident little guy who will literally run to the front of the cage and straight up our arms which was a total heart attack for us as the only time he flares up now is putting him back in his cage. Gain his trust first and the rest follows