Missing Home Screens on iPhone 13 mini with iOS 17.5.1

On my iPhone 13 mini with iOS 17.5.1, I have three screens of icons; one and three have disappeared. Screen 2 functions as though it is the only one (if I swipe left I get the App Library, if I swipe right I get the status screen of battery life, notifications, etc.). I tried restarting--same issue. I tried the Reorder Pages feature, but only Screen 2 appears as one of the options to manipulate. I will try to free up some space so I can upgrade to iOS 18.2.1, but in the meantime I am limited to accessing my key apps from Screen 1 via the App Library screen. Any other fixes or workarounds?

[Re-Titled By Moderator]