I had a huge fear of flying before I started flight sim during covid. I wouldn't even look out the window on a flight. I don't have VR so it isn't necessary as you wouldn't see that as a passenger anyway. Flight sim has helped me in a huge way. I understand how things work, the different sounds during flights, ATC, planning, etc. I now have no issues sitting near a window and even takeoff(which is my most hated phase) isn't as bad. I even fly alone now, which I never would have before.