Your comment doesn't really contradict the parent comment. In addition to the misinformation and trolling, they did hack something, namely the DNC and John Podesta's email account. And those attacks were successful and affected the vote – but they did not involve hacking election systems.

Actually, they did separately hack election systems [1], putting them in a position to at least alter voter rolls in some counties (though perhaps not votes). But there is no evidence that they actually altered anything.

[1] https://www.nytimes.com/2019/04/26/us/florida-russia-hacking...