iPhone Notes app is not loading all my notes but I can search for them from Home screen

I am using the Notes app on iPhone 7 plus running iOS 10.2.1. I don't use iCloud. However, a few days ago, the Notes app stopped loading all my notes. My notes app shows nothing. However, when I search for a note using Spotlight Search, I can see the search result. When I tap on it, it opens the Notes app and showing an endless loading animation on the top of screen. Again, it doesn't load the notes. Is there any way to fix this problem and recover my notes either by transferring them to a Mac/PC or just fix the Notes app to load all my notes?