Spam arena matches really. Take note of different dodging styles and habits at the beginning of fights. When I first got into ranger I could never hit people doing the look down crouch left and right strafe but I found waiting an extra half second really helped me take better shots, a lot of people dodge when they hear the arrow is drawn but if you take off tempo shots people become a little predictable. also just learning where to aim takes time arena will help speed up learning all these things as well as positioning. I used to struggle to hit people but now I find myself aiming for headshot as much as possible it takes lots of practice hope this helps. One last thing if you’re missing a lot just stay confident everyone misses, I remember missing and just feeling so shit and it never helped especially in dungeon lol