Answers for "how to install react native environment"

install react native navigation

npm install @react-navigation/stack 
npm install @react-navigation/native --save

react native installation

npm install -g react-native-cli

//cd to the file where your react native projects will be 
react-native init albums

// Run instructions for  IOS/Android
cd projects/albums 

npx react-native run-ios
npx react-native run-android

how to install react native

down node js 
then npm i neact-native

start react native

react-native start