The Finals has native support for the Sony Playstation controllers, the Dualshock 4, DualSense and DualSense Edge. With these controllers, it's possible to play with Gyro Aiming.

For The Finals on PC:

• native gyro aiming support is only for the listed Playstation controllers.
  
• They must be connected via a USB cable; they do not work wirelessly with Bluetooth.
  
• Steam Input must also be disabled to use these controllers' native support in the game.

Also note for the DualSense Edge, The Finals does not use the back grip or additional function buttons.

That's it! Gyro Aiming is now enabled.