y0din

one way that works for some is to trick your mind by schedule your worrying to a time and date in the future and tell yourself you will handle it then. this gives you a "solution" for your mind to stop worrying about it now, as you have a plan to do it later..

worked for me quite a few times actually..

good luck, and hope you get it sorted eventually either way.

or, if it was a LG phone, could they be encrypted?

if so, perhaps this will help https://github.com/kamicater/LG-Gallery-Decryptor

or you might be unable to decrypt them at all

if you have access to a windows computer, or perhaps wine can work?, there might be a solution in the bottom of this thread where someone had a similar problem

https://superuser.com/questions/972013/how-to-repair-corrupt-jpeg-files

haven't tested it, so do some antivirus checks on the tool before you decide to test it just to be sure.

good luck, hope you get it sorted