unable to connect my iphone with my macmini m2 over bluetooth

If you're like me and do not care for or use iCloud. Then connect the iPhone to the Mac mini using a USB cable and Import the Photos into the Photos App on the Mac mini.

see "Import to Mac" at > Transfer photos and videos from your iPhone or iPad to your Mac or PC - Apple Support

What are you wanting to do?

(backup, sync, import photos, import files, other)