Always keep your crosshair at head height where you expect an enemy to appear. This reduces the distance you need to move your mouse to get a kill.
While the idea of never missing a shot is tempting, using cheats in Arsenal comes with significant downsides:
Often called "Wallhacks," these draw boxes or lines around players, allowing you to see their health, distance, and position through solid walls. The Risks of Using Exploits
Using an Arsenal aimbot might give you a win today, but it will likely cost you your account tomorrow. Improving your raw mechanical skill is the only "hack" that won't get you banned.