How to change app backgrounds to black on my new iPhone 16 Pro Max?

Hello everyone:-) I have an iPhone 14 Pro Max and just got the new iPhone 16 Pro Max. They are both in dark mode. The background color on my APPS is black on my 14, but white again on all apps on my 16… I want them all to be black like on my 14. How can I make the app background black on my 16? Thank You 😃

[Re-Titled by Moderator]