What should I do if the iphone wallpaper darkens?

It's not that complicated, just adjust it in the photo. Click the photo you want to use as wallpaper, then click "Edit" in the upper right corner, click the button to the left of the ellipsis, select the lighting effect option to make it bright, and then set the wallpaper so that it won't be so dark. Of course, if you are not satisfied, you can fine-tune it by clicking on the brightness or other small options in the lighting effect options. Hope to adopt