Hi trombealina,
Welcome to Apple Support Communities. We understand that you have questions about customizing your Apple Library on your iPhone. We'd like to help.
From what it shows here, it doesn't look like you'll be able to customize apps within the App Library. However, it may be helpful for you to create and use folders on your Home screen so you can easily locate one by category. Check out this resource for help with that: Organize your apps in folders on iPhone - Apple Support
Create folders
1. Touch and hold the Home Screen background until the apps begin to jiggle.
2. To create a folder, drag an app onto another app.
3. Drag other apps into the folder.
You can have multiple pages of apps in the folder.
4. To rename the folder, touch and hold it, tap Rename, then enter a new name.
If the apps begin to jiggle, tap the Home Screen background and try again.
5. When you’re finished, tap Done, then tap the Home Screen background twice.
To delete a folder, tap the folder to open it, then drag all the apps out of it. The folder is automatically deleted.
Note: Organizing your apps on the Home Screen doesn’t affect the organization of apps in the App Library.
Hope that helps!
