Over exposure photos

Whilst photographing strangers on campus and trying to capture different gazes I realized that I had made a very big mistake. When looking back at the photos that I had just taken it was drawn to my attention that over half of the pictures were overexposed leading to them being extremely bright and very difficult to see. The exposure of each photograph is affected by aperture, shutter speed and ISO. It became clear to me that I had made a major rookie mistake by not looking at each of the settings before taking the photos and even more of a mistake by not checking my photos after I had taken each one. Below are some examples of the terrible photos that I had taken due to my mistakes: