Steps to follow download react native
First, need to download node.js from official website Node.js official website.
The second step is to install JDK8 (Java Development Kit): Open an Administrator Command Prompt right click Command Prompt and select "Run as Administrator"), then run the following command:
choco install -y nodejs-lts microsoft-openjdk11
If Chocolatey is not installed, you can follow the Hitesh sir video to download chocolatey.
The next step is downloading Android studio from the official site.
Make sure,
Android SDK,Android SDK Platform, Android Virtual Device
is installed while downloading android studio. While installing if u haven't checked these three options then top right three dots click on that visit SDK manager in that second tab SDK tools you can download those packages from there too.