Not totally sure what you mean, however when your in the flight deck of your plane, you press the right key on your mouse to freelook…if it dont work not sure why that is the default
If you go to controls and select mouse Assigned (FILTER) Right key mose should be assigned Toggle cockpit focus mode…also
Toggle cockpit view freelook (Hold)
External camera
Toggle external view focus
Toggle external view Freelook (HOLD)
THis is the default, so not sute why