Videos uploaded to Instagram not loading

Hi! A little less than a year ago I uploaded a few videos to my Instagram story and ever since then I have not been able to watch them in my camera roll. Everytime I try to watch them they just stay blurry with the exclamation point in the corner and an error message shows up saying to try again later. My phone has been updated and restarted multiple times during this year and I should also have enough free storage. When I tried watching the videos by connecting my phone to my computer they didn’t even show up as files even though they clearly are on my phone (all other videos from the same event could be watched without problems). I am also not able to edit, duplicate, send them to people etc. Is there anything I can do to try and get the videos back?

(For some reason the description of my phone is for my old phone, I have an iPhone 12)