Incorrectly imported photos from MacBook to iPhone

Hi all,

I recently purchased a new iPhone and have tried to import all of my saved photos from my MacBook. When I do this, the photos are stored separately to the photos that I take. For example, if I take a picture now using my new iPhone, it would save in the ‘recent’ album.

Is there a way for me to combine / transfer the photos from my MacBook to the ‘recent’ album so that I can manage my photos easier?

Please see attached for reference - how do I combine the 14,418 photos from ‘iPhone’ to the ‘recent’ album? Note - I had to manually create the ‘iPhone’ album..