With iOS 14, there are new ways to find and organize the apps on your iPhone. One is the App Library that displays on your Home screen. You can see it by swiping left until you see the App Library.
Apps are automatically sorted into categories. For example, you might see your social media apps under a Social category. The apps that you use most frequently will automatically reorder based on your usage. When you install new apps, they’ll be added to your App Library, but you can change where new apps get downloaded by going to Settings > Home Screen and selecting an option.
To search for an app in the App Library, tap the search field, and enter the name of the app that you’re looking for. Tap the app to open it.
To delete an app from the App Library, go to the App Library and tap the search field to open the list. Touch and hold the icon of the appropriate app, then tap Delete App. Tap Delete again to confirm.
(This how-to is based on my experiences and info on Apple’s support pages — where the images sometimes come from.)