Camera stuck in orbit mode?

I need help! My camera is stuck in orbit mode. I was just flying around by holding right click but then i stopped moving, and when i tried flying forward the camera was stuck in orbit mode and i couldnt fly around.

Now whenever i right click and drag i dont look around from first person view like normal, instead it just orbits around an object im looking at. I restarted my mac and made a new project but nothing fixed it. Now im gonna delete and reinstall unity, but i need to know how to prevent this from happening again. thanks.