I'm sorry to hear your having issues getting into your Secure Folder.
As this is a secure folder in it's very nature there is a set way to ensure the actual owner is trying to access what's inside the Folder and what to do if the access options are forgotten.
The security protocols are not meant to be circumvented.
The following may help.
> https://www.samsung.com/uk/support/mobile-devices/what-is-the-secure-folder-and-how-do-i-use-it includes instructions on how to reset.
The following is a similar thread with a solution that worked for an owner > https://us.community.samsung.com/t5/Galaxy-S-Phones/Secure-Folder-Locked-Out-Can-t-Reset-HELP.
If I can be of any further help then please don't hesitate. Take care. 😎
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "