What is React Native?

Question

React Native

I know it's a framework. I'm interested in how things are set up here.
What does js code compile to in React Native?
Turns into Java, Obj-C or some code?
I wrote a simple application (I used expo) that displays text, pictures and a sheet - all this is implemented using react components. But how retractable panels are implemented, access to the camera and the smartphone system is a mystery to me, I assume that there are special functions for working with all this, but what are they implemented on and how is react connected to them?
Can React Native build large and complex applications? And if so, is the knowledge of react, js enough for this, or will you have to dive into the world of java, kotlin, etc.?
Well, as an additional question: is it possible to write games in react more difficult than tic-tac-toe on components?

Answer 1

Why were you not satisfied with the answers from the site of React native itself?
In short, everything is possible, you won’t have to dive deep, but in any case, you’ll have to delve into how mobile development works