My elite controller series 1 shooting wide not target

Hi all, can you help me here? I’ve got an issue with my elite controller series one as I try and aim at the person on battlefield six seems like it’s gone off not aim as I try and collect it and it goes wayward. What do you think is the problem? Can you help me with my settings cause I can’t do it on default but I can do it on for legacy and invert can you help me with this please? How do I change settings on battlefield six?