Locating stuff from my old iCloud account

I recently got a new iPhone 13pro Max! N I wanted to start fresh as far everything that was already in my old phone and under my old iCloud account. So I created a new iCloud email for my new phone! Of course I did a back up of everything on my old phone before I factory reset the phone to send it back into Verizon! But how and where do I go to be and to view my passwords, photos, documents ANYTHING UNDER MY OLD ICLOUD ACCOUNT??