This article discusses controllers for Arena Breakout. It explains whether controllers or gamepads can be used in Arena Breakout, so please use it as a reference.
Table of Contents
Can Controllers Be Used?
Not Supported
In conclusion, Arena Breakout does not support controller operation, and even if connected to the device, it cannot be used. Users who usually play games with a controller will need to get used to finger controls.
Official Statement
It has been officially stated that controllers cannot be used. In the worst case, there is a risk of being banned, so avoid forcibly using controllers.
Alternative Control Methods
Change Button Layout

You can change the button layout from the settings. Since there are many necessary operations, simply customizing the button layout to your liking can make operations smoother.
Change How You Hold Your Device
By changing how you hold your device, you may increase the number of fingers available for game operations, making it easier to control. If you are not satisfied with the current control feel, you might want to reconsider your grip.
Change Sensitivity

If you find it difficult to aim, it might be because the camera sensitivity is too high or too low. You can set sensitivity for normal mode, ADS mode, and for each scope magnification in ADS mode, so try adjusting it if you feel you can't win gunfights.