What is the best SQL alternative to SQLite for React Native in Expo?

Hi. I need SQL alternatives to make a staging database for my React Native app. I would also like to know NoSQL alternatives, I’m learning with Firebase, which is NoSQL and I am not familiarized with NoSQL databases, besides that in Firebase I can make a register and login, but in the default “collection” for register an user I cannot add more data (like name, surname, verificated, date_of_birth, and foreign keys to other colections), it’s not like a typical SQL table and I don’t understand it, I need an optimal and compatible SQL database or a NoSQL that is more intuitive, understandable and modifiable than firebase.

I can’t use SQLite because my app will be connected to a web app and both will share DB, but SQLite does not work for web.