No puedo iniciar el emulador de Android en el código vs para ejecutar react-native. Ya tengo un emulador en android studio. Muestra

error Failed to launch emulator. Reason: No emulators found as an output of `emulator -list-avds`. Como recién nacido para reaccionar nativo, no sé qué hacer. Metro bundler funciona bien, pero cuando ingresa npx react-native run-android

 info Running jetifier to migrate libraries to AndroidX. You can disable it using "--no-jetifier" flag. Jetifier found 870 file(s) to forward-jetify. Using 4 workers... info Starting JS server... info Installing the app... Starting a Gradle Daemon (subsequent builds will be faster) IOException: https://dl.google.com/android/repository/addons_list-3.xml java.net.ConnectException: Connection refused: connect IOException: https://dl.google.com/android/repository/addons_list-2.xml java.net.ConnectException: Connection refused: connect IOException: https://dl.google.com/android/repository/addons_list-1.xml java.net.ConnectException: Connection refused: connect Failed to download any source lists! IO exception while downloading manifest: java.net.ConnectException: Connection refused: connect