Hello there TreePhotographer,
I understand you're looking for assistance with the photos you take, so let's see how we can help with this.Â
For starters, are you seeing that this happens in all lighting or is it only occurring during certain lighting scenarios? If you've isolated to specific lighting scenarios, have you tried adjust the focus or allowing more time for the focus to occur to see if that helps?
With taking photos on your iPhone, you can adjust settings before you snap the photo so try that as well if you haven't already. For help with that, take a look at the following resource:Â
About the Camera features on your iPhone
If this still isn't helpful, it may be best to Contact Apple Support to look into this in more detail.
Have a great day!