Samsung doesn't make its operating system for its devices. As a result, their laptops run on Windows, and their phones use Android. This differs from Apple, which develops its operating system, giving them more control over device integration.
It's very subjective, why did you get the most expensive samsung phone if you already had non android ecosystem and knew it doesn't fit? And the camera? Get above in quality? Galaxy ultra cameras were always above iphones from their generation - make a video/photo comparison if you want to prove iphone has better camera or better yet don't take my 2 cents for it, people already did it.