Flutter App Localization enable Language switching for Android

Question

It works on ios. So in ios you can change an apps language if it supports multiple ones. In android i believe you can do this too (google says so). I have setup my project with flutters l10n localization. Depending on the system language the app is either in german or english. this works. however on my iphone simulator i can switch the preferred app language in the settings after adding the second language in my project. On my android emulator i cannot do this. For other pre-installed apps there is an language option tho. (I followed this: https://docs.flutter.dev/ui/accessibility-and-internationalization/internationalization)

I already tried adding a second language by adding some xml files in my android build folder, didnt work either.

l10n.yml

arb-dir: lib/l10n
template-arb-file: app_en.arb
output-localization-file: app_localizations.dart

pubspec.yml

dependencies:
  flutter:
    sdk: flutter
  flutter_localizations:
    sdk: flutter
  intl: any

Target android version: 33 (Simulator version: 34) Flutter version: 3.16.7

This is the exact setting im searching for (first settings options for calendar app on android simulator, second beeing my flutter apps settings on an iphone)