I created react native expo not cli app using following command line.

npx create$-$expo$-$app test && cd test

npx expo install react$-$dom react$-$native$-$web @expo$/$metro$-$runtime

npx expo start

Problem$1.$ It doesn$$t work on android studio enumerator android version $6,7,8.$ I think I miss the setup or I don$$t know. Can you help this problem?

Problem$2.$ I have login$.$js and style.js where style.js is styling components or text box line input text etc. first if I run this app on iOS it has small white gap on left and right. If I run this on android there is app screen and lots of white spaces around it and it seems doesn$$t fully cover the screen size how to fix this? So that my screen and app can be fit into any device$$s screen size. Give me examples and code