How to store selected checkbox IDs to my database on Laravel 8

I have created a dynamic survey builder application, where the survey creator can choose what question type the question that will be made (either radio, checkbox, text and textarea). The storing of user’s responses are saving correctly EXCEPT on my checkboxes. If the user selected 3 or 2 checkboxes then it will only save 1 to the database. Please help I am new to laravel. Thank you