can't look around in game with mouse

my friend launched the game today and couldn’t use his mouse to look around in game but he can move his cursor around in the menu screens just not in the actual game or lobby. He can look around just fine with his trackpad just not with the mice. We’ve verified the files, we’ve reinstalled the game restarted the laptop and also disabled steam input in controller settings. We’ve also disabled touchpad in windows settings.

The arrow keys should work just fine. You’re welcome.

Have you tried removing the mouse in the Device Manager and restarting so the drivers are reinstalled?