A little perspective:
A 2016 study by Levin found that, among 938 global elections examined,[a] the United States and Russia[b] combined had involved themselves in about one out of nine (117), with the majority of those (68%) being through covert, rather than overt, actions. The same study found that "on average, an electoral intervention in favor of one side contesting the election will increase its vote share by about 3 percent," an effect large enough to have potentially changed the results in seven out of 14 US presidential elections occurring after 1960.[2][c][d] According to the study, the U.S. intervened in 81 foreign elections between 1946 and 2000, while the Soviet Union or Russia intervened in 36.
https://en.wikipedia.org/wiki/Foreign_electoral_intervention