You still have to move the mouse. If your tracking and flicking skills are poor, a texture pack won't save you. You aren't breaking the game’s code; you are just optimizing the information your brain receives.
Some gamers use monitor crosshair features (e.g., ASUS ROG’s GamePlus) or lightweight overlays like (for Windows). These place a static dot in the center of your screen. It doesn’t track entities, but it helps with bow leading and sword crit timing. aimbot texture pack minecraft