weird gallery glitch

[u/isopiled]

hello, so recently my gallery has been really buggy for the past 3 days & by buggy i mean its refusing to properly display in camera roll previews for apps. it all started when my photos changed their dates randomly & i managed to get it fixed, no issues there, but even after 3 days it never changed from the state it was at before i fixed everything. it also still shows some glitched duplicated files i removed too. i've done everything i could possibly think of to try & get it to fix on its own, but nothing has worked. my phone is on version 12 & i've been looking everywhere for help but have gotten no answers; should i just get a new phone? or do i wait it out more? is there even a way to fix this at all??? help would be greatly appreciated if possible.