How do I get my old Snapchat account back?

Hello everyone! I created a Snapchat account in 2017 under the name k********.kv. It was still on my old phone, but I still have the email address. I also saved a lot of pictures and videos there.

In 2022, I was actually able to log in and view them without any problems. Then I changed my name to d***** and deleted Snapchat after a short while. (Or rather, I uninstalled the app; I NEVER deleted my account.)

Now I just wanted to access my stuff again. I only had this one email for my Snapchat account, but nothing's there anymore. No pictures are saved, and my contacts and chats are simply gone, as if it were a completely new account.

I also went through my emails, and apparently Snapchat somehow registered me for the second time with a single email address? How can I access my first account, which contained valuable pictures :((

Kind regards