A point made upthread is that there is nothing unprecedented about this.
The USA has been covertly interfering in foreign elections constantly for a century, in both hostile and allied countries. The USA has engaged in undeclared cyberattacks that actually did destroy physical infrastructure. The USA is currently attacking every computer it can reach for surveillance and blackmail purposes.
Yes, it’s a shitty thing when a foreign power subverts your democracy, and the ordinary people are right to be angered by it. The ordinary people of the not-USA have been angered by it, for a very long time.