When I first moved to iPhone 11 PM from Android I couldn't figure out how to move my icons on the screens to the bottom so it wouldn't cover up my wallpaper photos that had people pictured in. ***SOLUTION!!! Download Photo Widget App, Create a *separate* album for each (different) single picture you want on any number of screens you create that have icons (or no icons) on them, hold your screen so the icons giggle, tap the plus sign on the top left (to get to "Search Widgets", scroll to Photo Widget icon and select, scroll to the right to see the different photo size options that will appear on your screen, click on "add widget", it will then appear on the screen, then depress and hold the new widget, select the album of the picture you want for that screen and it will appear, then select "done" to stop the giggling icons.
How to save icons save bottom of home and other screens
You can also have a "slide show" of pictures in the Photo Widget app if you set up your albums with multiple pictures in the Widget Album setting:
Go to Photo Widget App
Select Album(s) to add several pictures to it
Go to your home or additional screens' widget and depress the picture that's there and select "Edit Widget"
Select Album Name or
you want for that screen
5. Select your Photo Refresh Interval (chooseof minutes that they rotate)
6. Select your Photo Play: Random or In Order options