the photos I take look blurry in my photo album but when I zoom in and then zoom out on the photo, it gets clear

I just got an iPhone 11 (just the 11) a week ago, but I noticed that the photos I take look blurry in my photo album but when I zoom in and then zoom out on the photo, it gets clear and the picture looks nice. To take the picture looks like a perfect and clear shot, but when I go to look at it, it looks blurry and not clear until I zoom in then out. Also, they look clear when I post on social media, just not in my photo album. Is that normal? Or do I have to change something in my settings?

[Re-Titled by Moderator]