This is direct evidence against Ukraine.
That's not "direct evidence". It's circumstantial at best, not really about this kind of event - the article you quoted was about raising the water level (basically opening the gates while not having access to them) without flooding villages, not blowing up the dam completely.
Maybe you, in contrast, have direct evidence against Russia, in addition to unfounded accusations? No, you don't have them, and no one has them, otherwise they would have been circulated by all Western media.
Russians controlling the dam and the impossibility to cause this kind of damage remotely and unnoticed is quite damning albeit also circumstantial evidence. But you wouldn't believe "Western media" even if they had a high resolution photo of drunk Ivan unloading a truckload of TNT at the dam so let's not pretend that you are looking for evidence here.
Funny how Russian satellite surveillance has nothing to say about this, almost as if Russia doesn't have anything up there.