It’s not democracy that’s dying, it’s actually on the rise. Trump, Erdogan, Putin and Duterte were all elected democratically. It’s liberal democracy that’s being eroded. (That’s ‘liberal’ in the original meaning, BTW, not the one used in the US) and it’s happening in more places than the US alone.
See this article about CNN’s Fareed Zakaria’s 1997 essay “The Rise of Illiberal Democracy”