Comment by johannes1234321

They are - but in cooperation with others. Parts of the Orion capsule of the current Artemis mission program are based on the German ATV, which is a capsule which was developed to supply ISS. On ISS there are German modules like Galileo. German Spacelab was a major component of many Space Shuttle missions. German companies like Zeiss provided optics and laser components for Apollo. To name a few, besides lots of satellites and other things. However after WW2 there were different political decisions, so that Germany won't build its own rockets, but German technology was key to Saturn V and Ariane rockets.

Aside from technology, Germany also got major control centers and mission planning capability in Cologne and Oberpfaffenhofen.

Most components are there, but not the political will to go on a national mission.