Help , some photos didn’t come over to my new phone. - eviltoast

I got a new phone (15) on Friday, before setting up the new phone I purchased more iCloud storage and made sure everything was backed up . I went looking for a picture today and saw that none of my photos from August and October transferred over and in July they cut off on the 21s . Is there anything I can do ? All of my baby’s newborn photos are gone and I am devastated.