Try iPhone Passcode Genius: https://www.isunshare.com/iphone-passcode-genius/

This is a video about how to reset your iPhone with the help of iSunshare iPhone Passcode Genius, which can be followed under the following situations:
1. Don't have the Apple ID password because it is a second-hand device.
2. Forget the screen passcode or screen time passcode.
3. Find My iPhone is enabled.

If you fail to factory reset your iPhone within itself or via iCloud & iTunes, this way must be helpful.
Note: Factory reset will wipe all data & settings from your iPhone.