iPhone Locked – "iPhone Unavailable"

Hello,

I lost my iPhone, and the person who found it tried to unlock it several times with the wrong passcode. As a result, the device is now showing “iPhone Unavailable.”

The phone was eventually returned to me, and I know the correct passcode. However, I cannot enter it because the device is permanently locked. Unfortunately, I did not back up all of my data to iCloud, and I am very worried about losing the information stored only on the phone.

Could you please advise me if there is any possible way to unlock my iPhone and regain access without erasing the data?