Delete imported photos from Mac on iPhone

I got a new iPhone. The **transfer files to new iPhone** feature was not working - *I couldn't move the photos and files* from my old iPhone to the new one. I had the brilliant idea to move all the photos from my old iPhone to a Macbook. After that, I synced the photos from the Macbook to the new phone. I reseted and sold the old iPhone and the Macbook. Now, on my new iPhone, **I can't delete any photos I imported from that Macbook**. They are shown in Recents and also in From My Mac. Is there a way to be able to delete any of those imported photos on my new phone? iCloud is disabled and there is no photo uploaded to iCloud. *My new phone is an iPhone 16 pro max with iOS 18.1*