How to make a container as a check box in Flutter and make sure it doesn't deselect

Question

I have used a package group_button 4.2.1 but once i select the textfields the check boxes buttons deselect and i have to select again, i have tried using the controller property of the Widget but i didn't get it to work.

I was thinking if i can make a container from scratch that is a check box and can retain the value once i finish filling the form to be submitted to my firestore database.