The left rudder key (default numpad 0), instead of turning the rudder, changes the view to the cockpit although the right rudder(default numpad enter) worked just fine. I assigned the left and right rudder to different keys and now the left rudder works but the right doesn't. I also tried resetting the controls to default but the problem persists. I don't have a joystick yet so I'm using keyboard and mouse. Any help would be appreciated 🙂

It looks like the default controls are incorrect.  It says Num 0 for left rudder and Num Enter for right in the keyboard settings.  Believe it or not, you need to reassign the key press for right rudder.  When you select Change Assignment... for Rudder (yaw right), it will say "Enter" on the keyboard input and not "Num Enter" as you see in the default keyboard control.  It must have been some programming error - they thought the key was called Num Enter.

I just realized now that the Enter/Return key on the main keyboard layout is not used by the sim by default.  It controls the right rudder as well (after you reassign it).  There must have been some sort of programming issue that prevents the Enter/Return and Num Enter keys from being recognized as separate key presses.

I have FSX and solved the rudder problem in realism settings . Slide the general tab to mid range or whatever suits . Click autorudder if you have a yoke and no pedals . The rudder will not center but its more controllable .