You are right regarding the insufficient opportunities for highly qualified people. Regarding your other point: https://home-affairs.ec.europa.eu/whats-new/pub

You are right regarding the insufficient opportunities for highly qualified people. Regarding your other point: https://home-affairs.ec.europa.eu/whats-new/publications/oecd-report-germany-status-immigrant-integration_en#:~:text=Only%2040%25%20of%20immigrant%20women,without%20school%20qualifications%20in%20Germany. https://home-affairs.ec.europa.eu/whats-new/publications/oec... The liked pdf there gives a good overview.