How do I get my reminders app back?

The App Library is an iOS 14 feature. You don’t have in on an iPhone 6, which can only go up to iOS 12.5.1.

First check to see if it is hiding somewhere on your phone. Open Spotlight search by dragging down from the middle of the screen and search for “Reminders”. If the app appears it is on one of the pages of your Home screen or in a folder. If it’s in a folder the folder name will appear next to it. If it only shows up in the App Store using Search just download it again.

App Library. Last screen on the device.

Swipe left until you get to the last screen.

Yep. I missed the basics.

Time for your 2nd cup of coffee 😏

Had 4. Didn't help my vision. I saw 13 at the top and thought it newer.