I might not be corruption, it might be worse.
I was told by Brussels insiders a few decades ago the Commission people are not really corruptible. They are guaranteed a very comfortable life and the sanctions are harsh. That might have change, I don't know.
What I was explained is the system is designed for lobbying. The main input is by the lobbies, not the people.
Most of us assume the EU is designed like the US system or individual countries like Germany, Italy or France but it is not. The power of the Parliament is very limited, but we see here that little power has become too much of an inconvenience for the people in power.
For anyone daring to look into the boring design of that thing will come to the conclusion it is absolutely not democratic.