I’m a self-taught developer learning Flutter. I need to connect my PostgreSQL database hosted on Cloud SQL (the PostgreSQL service managed at GCP). There is only very specific and step by step documentation for Firebase, the problem is that I don’t want a non-relational database because I am not familiar with them.

According to what I have read in some articles I need to connect the database via API requests as that is the safe way to do it. For this I need to activate Cloud Functions in Flutter, which I don’t know how to do, and then connect to Cloud SQL.

I need someone who show me step by step or guide me how to connect Cloud SQL with Flutter and tell me how to add Clud Functions to Flutter to make API requests, how to create the database API, etc.