The blurry photos are usually the ones from the best nights. Nobody was busy posing.

A clear photo often means somebody stopped the moment in order to arrange it. The blurry ones survive from nights where nobody was managing how it looked, which is usually the same reason the night was good. Quality of image and quality of experience run in opposite directions more often than you would expect.

Take fewer photos at the next thing you actually care about. Get one bad one for the record and then put the phone away. The blurry evidence will be enough, since you were there for the rest of it.