It's an old saying in video and film: Don't look at the camera.
This saying is very misguided.
When you are interviewing a subject, or doing an introduction to your video, or any time you are addressing the audience you or your subject should look into the camera. If you are doing an interview, it is not compelling to shoot your subject's ear, that is not how people talk in the real world. Have the subject look directly into the camera and make a connection with the viewer.
Video is far more personal than it was when "don't look at the camera" came about, and the way we shoot should reflect that.