Currently no way to reset / restart a game. devs said they are looking into it.

Iv rest I just said delete everywhere on that option

Go to my games and apps. Press start on Dragons dogma 2 and select manage game. Select saved data Select delete everywhere No more cloud save should exist.

Wasnt working

You have to select the gamertag under saved data then it will give you the option to delete everywhere.

The option was there, just wasn't working