Account Recovery

Hello, I accidentally reset my iPhone mini 12. It’s a new phone that I acquired about a month ago after dropping my previous phone in water and losing it. For the most part, a good amount of my data was able to be restored. However tonight when I was testing some features I accidentally reset it not realizing that was what I was doing and now my cloud account is appearing how it did roughly two years ago when I first connected it with this phone number. I was wondering why this has happened and how to fix it.