Mark unsorted recents photos in iPhone

I've a habit of sorting all my 'recent' photos into different local albums on my iPhone. I've 30,000+ photos in 'recent' album and NOT all are sorted in various local albums. How can I mark the photos in 'recent' albums, all the photos which are NOT sorted/present in any other existing local album? After marking those unsorted photos from 'recent' album, I will easily sort it out to various local albums and stay organised. Secondly, I'd like all my iPhone photos albums to be synced with macOS Photos app albums without duplication. How is that possible without using third-party tools?