This is clearly wrong. The word has a long “ee” sound and Biden pronounces it exactly the same as the two times he said “eager” just before. And the “n” sound seems to have come from “next” in the next few words. There is no context for the n-word to have been used there. That he would slip and say that particular word makes no sense.
An important (but not the only) element of trolling is misrepresentation. You clearly did this, and repeating it again as I said does not help your case.