This might be helpful to some people who are struggling with setting up the main camera in unity.
I find myself fiddling with the move (W) to set the camera correctly. An easier way is to move the Scene View (Alt+move pointer), Select Main Camera, Go to GameObject>Align with Selected View. Your main camera will now point at the same Scene view as in your scene editor.
Source: https://www.youtube.com/watch?v=DXri5QRC3HU&ab_channel=Unity