So, I don't play Xbox, but I have some experience with FPS games on PS4 and I always use the accessibility controls (ie: control rebinding) to set my jump button to left bumper (L1 on PS4). The advantage of doing this is so you can aim easily while jumping.
I suspect on the Xbox version of the game Jump is bound to something stupid, like one of the face buttons, forcing you to take your thumb off the right-stick; limiting your aiming.
Give it a try if it's possible. You might find you enjoy bunny hopping around like a pro ;)
