I know there isn't button to do that, but is possible in the future the forum have that feature?
Because I've mistakenly reported my post to a moderator by accident.

So far, I reported 3 posts with 100% accuracy, 1 of the 3 reported is my post.  I don't know how that 100% comes, because my post i did report some time ago, maybe still be unhandled or hasn't been seen by a moderator. (It might also a bug percent calculation)