Make.com custom app

Hey guys i would need a little bit start up for buidlng a custom app in make.com that will have modules that interacts with bubble.io app.

I would like to understand how it works and what should be the ideal flow from the authentication to user authentication and create,delete update get list of things from a bubble.io app as a user.

how would make.com custom app will work for bubble.io app

thanks