If you have not previously connected the app to Facebook, you can reset your progress by reinstalling the app or playing the game without connecting to Facebook.
A reset can also be done by submitting a delete request for your account through the in-game settings.
Note that deleting the app without first connecting to Facebook will lose all your progress! That means all the purchases you've made, Garden upgrades, Wild Wonder collection, gold and booster stashes, as well as level progression and scores! The same applies to deleting your account by sending a request.