The EU Commission was caught breaking the law in order to lobby for Chat Control: https://noyb.eu/en/gdpr-complaint-against-x-twitter-over-ill...
The EU Commission also gave a foreign tech company called Thorn (they pretend to be a charity), special access to government officials: https://netzpolitik.org/2022/dude-wheres-my-privacy-how-a-ho...
I think both of those cases would be examples of lobbying and corruption.