If by nobody you mean nobody outside the specific, targeted people Russia paid Facebook to show them to, sure. There are a lot of examples of them on the internet, but funnily enough only Facebook has the whole lot.

The reason none of us have seen them, could be that they were only targeted at the gullible dumbasses who could possibly vote for Trump? Maybe that was a special target group? Maybe it's the same group that gets ad-targeted for e.g. hemorrhoid cream and mobile home skirting?

Frankly, given the revealed political preferences of FB executives, I'm pretty skeptical of any fruit from this tree.

The incredibly effective Russian ads that cost $100k. As opposed to the nearly $2 billion spent by the candidates.