Required software development,Website Development freelancer for Firestore Chat Data Model job

I am looking a experienced developer. If you have current project to show me, it would be great!
I want to build mobile app using firebase and react native. It has chat functionality to be developed.
I decided to use firestore for chat db. I know it should include users and messages database.
But I am not sure how I can configure collections and docs in firestore.
So if you can show me chat database in the firestore and explain briefly about that.
Please contact to me soon.

Thanks

Skills & Expertise Required

software development Website Development