Massive camera problems in Fortnite it's unplayable?

Hi. I somehow can't get the Fortnite camera to point directly at the enemy so that I can shoot. And it is so extreme that I sometimes just look at the floor even though the opponent is right in front of me. If an opponent is right in front of me, I either raise the camera too high so that I shoot up or down too far or not directly at the opponent. I have such massive problems that I only did 1 kill in a complete round. Are there any tips or settings that make that easy?

Sensitivity

Lower sensitivity

And where exactly can I find this in the settings?