Camille’s Hookshot can definitely be hard and frustrating when you are just learning how to play her. In the laning phase, try to use your 3rd, Hookshot after you land a 2nd, Tactical Sweep so the enemy is slowed and becomes easier to hit. Also, wait for Camille to land in the wall before releasing the second phase of 3rd, Hookshot so you can aim it better. Use a few moments to aim to make sure that you’ll hit your enemy. Most importantly, practice.