There is no "magic file" you can download to get 100% headshots—and attempting to use third-party "auto-aim" scripts will get your account banned. The best is a combination of Enabled Aim Assist, High Gyroscope Sensitivity, and a 4-Finger Claw layout.
Using the official PUBG Mobile Aim Assist is the best "config" option. Anything promising "no-recoil" outside the game files is likely a hack that could get your account banned. auto aim config pubg mobile better
If you want to improve your aim instantly, apply this config checklist today: There is no "magic file" you can download
Relying solely on the config won't help you fight against high-level players. You still need to manually aim and manage recoil. Recommended "Configs" for Better Performance High Gyroscope Sensitivity