Images no longer showing up in some of my decks

My computer hardrive recently broke and when I redownloaded from anki web most of my media files are missing. A lot of these are really old notes for me that I should definitely have had backed up on anki web. I tried check media and it was I have about 4800 missing files, but I only made around 100 notes since last update to anki web. How do I find these missing files and get my images back? I have tried the switch profile and redownload from anki Web suggestion in a previous thread but no luck, files still missing even after sync. Any suggestions ? pls help

image

Weirdly, when I downloaded the new deck it still had the same media missing, moved it to the other collection.media file and after a sync missing media all returned!