Apple added the App Library to iPhone with the release of iOS 14. Like the App Drawer on Android, any apps that aren't on your home screen are stored in the App Library.
Moving apps on the iPhone home screen into the App Gallery is very simple. If you don't know how to do this, do the following.
Step 1: You press and hold on the application you want to execute.
Step 2: Choose Delete the app from the menu.
Step 3: iPhone will ask if you want to move the selected app to the App Library or delete it. Here, we choose "Move to App Library".
Step 4: You open the App Library by swiping right to left from the final home screen to check or quickly search.