"npx create-react-app my-app" This command install npm as package manager, but as create-react-app website it is showing yarn.

[Pankaj29Shah]

when i am run "npx create-react-app my-app", This command install npm as a Package Manager in the window, but as this site "https://github.com/facebook/create-react-app" is showing, it install yarn as a package manager in MAC. Is there any way "yarn create react-app my-app" without this command?