Answers for "We no longer support global installation of Create React App"

npx create-react-app my-app not working

npm uninstall -g create-react-app
npm cache clean --force
npm install -g create-react-app

A template was not provided. This is likely because you're using an outdated version of create-react-app. Please note that global installs of create-react-app are no longer supported.

npx --ignore-existing create-react-app

create react app not creating template

if react is installed globally, run this:
npm uninstall -g create-react-app

then run this:
npx create-react-app {directory name}