How Do We Fix Blurry Images In Photos (iPhone) Even When Photos Are Clear In Camera?

Recently I shot about 20 pics with my iPhone 7 plus. When I viewed them later in my Photos app, all the new pics were blurry. I was very disappointed to see all of them blurry (with no chance of shooting the experience again). While researching my problem online, I was in my camera app (thinking the problem was there), but all of my pics in camera app were great. Then I checked my google photos and the same pictures were just as clear. I went back to my Photos app on the phone and all of those pictures are still blurry. Any suggestions?
Ken
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Kenneth Vignona