You will not find much local corruption though, which is what most people think of when they hear corrupt countries. Local corruption is paying of a cop, judge, that kind of stuff. I’m sure it also happens in Germany, but that is very very rare.
So to be corrupt in Germany, and places like it, is to do the "corrupt" thing "correctly" -- e.g. in some structural fashion tied to political parties, long term associations, business connections, etc. that have the appearance of being practical, official, and "right."
A friend of mine who came from Iran originally had a comment like this about western countries corruption vs "third world" or "second world" corruption:
In Iran or etc. corruption is almost more democratic, because it means as a regular layperson you can bribe some local official to make something go your way. It's not just, it's not fair, it's ugly, but it's "accessible" if you have some spare cash.
But in the west, corruption is for the super rich and the connected at a much higher level. e.g. you can't bribe a zoning official so you can build an addition or a shed, but if you're powerful enough you can control a political party and prevent it from investigating your company, have it enact some preferential laws, or stop it from some raising some tax.