Can't delete photos

Hi,

I recently got a new phone because I broke my old one's screen. Due to that, I wasn't able to use the "quick start" feature. It wasn't a problem for me, but I wanted to get the photos I had on my new phone. So, since I imported them on my Mac previously, i did it back to my new phone.

The problem is, now with the new ones I took, I start reading storage. And, idk if it's a bug with the importation, but I can't delete the photos I imported from my Mac. No "delete" option, I tried everything I thought, iCloud Photos on/off, sharing with my Mac on/off. Still no result. Any idea?

Thanks in advance