US elections are definitively complicated, but for no good reason. It is a lot because of the complex old laws, traditions, first-past-the-post and that primary elections don’t happen together but individually in different states over a period of one year.
If we would just use the popular vote to decide the election and use ranked choice voting we would have election done much faster and would pickup a candidate, that most people would be happy with.
RCV already showed in Alaska that it makes it very hard for the least desirable candidate to win when there are two better candidates that people are divided over (i.e. with FPTP Palin (who most Alaskans hate) would normally win)