Try disabling HDR, restart the game, in the main menu options go into HDR Settings and adjust as desired, exit the game and restart.
After being prompted to set the brightness and contrast, try going into the HDR Settings from the main menu, make some tweaks and restart the game.
Try clearing the PS4 cache: press and hold the PlayStation button on the controller, select 'Turn Off PS4', wait another 30 second after it finishes shutting down, and start it again.