Photos on Phone from Old PC
I have photos on my iphone that were saved from an old PC, and I am now trying to move them to my mac, but not having luck.
Not sure what actions you have already tried but here is the official document to get started
Import photos and videos from your iPhone, iPad, or iPod touch to your computer - Apple Support
Unfortunately you can't do it directly. Photos that were synced from a PC to an iPhone can only be deleted by doing a new sync with no photos selected. You cannot import them now. Do you still have the old PC? If so copy them to your new Mac. If not you can try emailing or Airdropping them to your Mac.