Not the OP but this assertion is at very least a non-obvious as constructive proof requiring vast elaboration and at worst, obviously wrong on the surface with clear existential proof as mentioned by the OP [except for perhaps a idealized definition of the word "democracy" that does not resemble what you actually get on the ground when you implement it.]

> Unless the people is willingly supporting corruption, a corrupt state cannot be democratic, by construction.

There is nothing about democracy or its construction that precludes corruption. You literally just made up nonsense.

> You're just looking for a fight.

No. I believe you are projecting.

> Go for a fresh air walk outside instead.

Go read about the solomon islands. This issue is about corruption in solomon islands - a democracy. Or go crack open a book and learn about democracy and its history. Why everyone from the ancient greeks, who gave us democracy, and the founding fathers, who gave us modern democracy, all distrusted democracy.

As a matter of fact, democracies are by nature corrupt ( tyranny of the majority ) and that's why most democracies have measures to product the citizens from democracy. Rather than regurgitating nonsense you've seen on tv or the news, learn about democracies or take a moment to think about it.