I need advice. Am currently building a real estate marketplace mobile app using Flutter for frontend. I am not sure which backend solution to use, and thinking of using Firebase, Django or Laravel for backend and MongoDB/MariaDB for the database. I want to build an API backend and then use RESTful API calls for the frontend.
I think you should first choose either a database or server side programming language then you can streamline your other choices based on that, but I think if you are building a big project then going with django + firebase / mongodb would be a good choice else choose laravel + firebase.