restore factory reset

Turning off Find My on its own should not have wiped the phone, you must have triggered something else .

Anyhow if you have never taken a backup you have no way of restoring the data.

Best scenario is that you never turned off iCloud Backup, which is on by default.

Set up the phone as new and use your Apple ID in the setup. If you have an icloud backup it will be offered to you. If not then any data not already sync'd to a cloud service will be gone.

Your contacts, calendar, Notes, email etc should be safe.

The words you use are a litte confusing

Here are the three actions, Backup, Restore phone to factory settings, and Restore data from a backup

(1)          How to back up your iPhone, iPad, and iPod touch - Apple Support

(2)          Restore your iPhone, iPad, or iPod to factory settings - Apple Support

(3)          Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

Please ensure you have a backup either on iCloud or on iTunes.

Restore to factory settings:- Restore your iPhone, iPad, or iPod to factory settings - Apple ...

Go to settings

General

scroll to bottom

Press transfer or reset

then press erase all content and settings

and Follow the steps