Laravel models - Create, read, update and delete functions

I'm new to Laravel, I have no problems but need advice. In my thoughts it will be better practice if I make Create, read, update and delete functions of my table located in my model to be more orgnised. all tutorials that I learned are locating these functions in controller.

• What difference does this approach make?
• does my structure effect the security of the app?
• if not effecting, how to implement functions in my way?

via Chebli Mohamed