Actually not. Zelenskyy was in the Panama Papers. Hiding money offshore since 2012. This from the Guardian prior to the war.

https://www.theguardian.com/news/2021/oct/03/revealed-anti-oligarch-ukrainian-president-offshore-connections-volodymyr-zelenskiy

We don't know what else he has hidden or what deals he made. His entire show career, then political party, then presidential campaign has been financially supported by one Ukrainian oligarch - Ihor Kolomoisky.

2012 is the same year that Zelenskyy went into business with Kolomoisky.

So yeah, corrupt.