We have propped up dictators (Diem, the Shah, Pinochet); We have tried to overthrow foreign leaders (Noriega, Fidel Castro); We have promoted "regime change" (Assad, Hussein). We have also tried to influence democratic elections on many occasions-- Obama tried to help Ehud Barak in his anti-Netanyahu efforts, and Trump has tried to help Netanyahu.... Some with aid, some with electioneering. There are many other examples. This seems to be a common element of American Foreign policy, regardless of whether the occupant of the White House is a Democrat or a Republican.
So, why are we so upset that the Russians were trying to do the same thing?
Wow, just wow. How do you know about those horrible things the US did? Because of our freedom of the press (something the demagogue in chief would like to destroy) and some people doing the right thing. When did Russia ever admit to any of the horrible things they've done? Never. All governments do, and have done, awful things, but at least in the US it eventually gets out and even has a place in the history books.
Whataboutism at its worst.