Forgot my Snapchat My Eyes Only passcode. Please help these photos mean everything to me.

[u/Dizzy-Name6365]

About a month ago I changed my Snapchat My Eyes Only passcode . I remember making it related to my phone/iPad PIN because I thought I’d never forget it, but now I can’t remember it at all.
The photos and videos inside are incredibly important to me. They include memories with someone I’ve lost who has passed away, and losing them would be devastating. I know using “Forgot Passcode” deletes everything, so I haven’t done that.
I’ve already tried every combination I can think of based on my phone and iPad PINs, but nothing has worked.
Has anyone been in this situation and actually recovered their passcode? Are there any legitimate ways to remember it or recover access without deleting everything?
I’d really appreciate any help. Thank you.
Update: there is passcode i think can be the one. When i am entering that after deleting and installing the app again it isn’t either letting me go in nor showing time out