It's not as visible for outsiders, because nations with corruption issues usually also have police and office workers essentially doing shakedowns to do their jobs, and that's not really a thing in Germany.
What is quiet widespread is politicians and office worker enriching themselves either directly from budgets theyre responsible for or by doing things for corporations which pay them handsomely.
Take our Kanzler for example. He was involved in stealing over 50 million €. (CumEx) Not only didn't he get punished, now he's also in the highest position of the German government. And I wish it was an extreme example, but it's really not.
The health minister is responsible for the current health care crisis, which he kicked off over 10 years ago. Thanks to him clinics prefer to amputate diabetes patients over treatment, because it pays more.
Each of the ministers has done similar things such as getting an extra 150k€ salary from the coal industry etc.