Going crazy - all my files are either png squares, psp or psd can't see photos on any

I cannot do anything with all my pictures I have as they show up as little blue icons for psd, zips or png files. How can I change them to shwo the photos, it's been going on for weeks. I somehow go tthem to work, then next day it's arong again, I cannot take this much longer, ready to delete thousands of photos. Someone please help me, I'm 68 and can't fix issues, I need this done ASAP Tahnks I use windows 11, edge.