Inquiry about the cause of image not alignment

[construction]

I want to know why the uploaded image is not aligned.
I photographed the terrain including mountains, and most of the areas that are not aligned are mountains including trees.
Please refer to the picture below, and I would like to receive an answer.

[Map Processing Report]

[MichaelL]

I would say (1) because of the difficulty with finding tie-points in trees and other homogenous surfaces and (2) it appears you used only oblique images.

What were your flight characteristics? Did you capture any nadir imagery?