TYPO3 Core

Given is a site management configuration with two languages:

rootPageId: 3
base: 'https://www.example.net/'
baseVariants:
 -
   base: 'http://example.ddev.local:8080/'
   condition: 'applicationContext == "Development"'
 -
   base: 'https://staging.example.net/'
   condition: 'applicationContext == "Production/Staging"'
 -
   base: 'http://testing.example.net/'
   condition: 'applicationContext == "Testing"'
languages:
 -
   title: English
   enabled: true
   languageId: '0'
   base: /en
   typo3Language: default
   locale: en_US.utf8
   iso-639-1: en
   navigationTitle: English
   hreflang: en
   flag: us
 -
   title: Deutsch
   enabled: true
   languageId: '1'
   base: /de
   typo3Language: de
   locale: de_DE.utf-8
   iso-639-1: de
   navigationTitle: Deutsch
   hreflang: de
   fallbackType: strict
   flag: de
errorHandling:
 -
   errorCode: '404'
   errorHandler: Page
   errorContentSource: 't3://page?uid=96'
routes:
 -
   route: sitemap.xml
   type: uri
   source: 't3://page?uid=3&type=1533906435'

For the translations of the content elements I am using the free mode. Result is now, that no content elements on the translated page are shown.