I seem to recall that this was not the result of Germans staying put and changing things for the better, but rather due to external forces reducing the majority of their country to rumble and and spending 2 decades reeducating them.
Not sure what "your country" is, but here in Germany that's the general consensus of Germany's progression to a "rather" pacifist society. You might want to take pacifist with a grain of salt though, considering how excited many Germans were about being able to deploy the Army for non defensive reasons in the Balkans, Afghanistan, etc. and how giddy everyone was that we were once again allowed to export arms to Ukraine. Not to mention the current rise of far right, xenophobic parties.
Fighting corruption is very difficult. A good way to go about it is to sent some of your young people to countries that don't have massive problems in order come back home viscerally convinced it's not a necessary evil you need to put up with.