While we are noting how successful he was, let's also note he lost. Any let's also note that his opponent Biden was quite successful.
What you see as lies, they see as smart things to say.
Beating incumbent is quite a lot. Also, based on what I read in conservative journal I read, Biden won in election where he was painted Marxist progressive litterally communist. And pedophile for some reason. His past costed him some black votes, but somehow he is still radical pro-rioting progressive sjw.
It does not matter whether Trump is capable or clown. Truth did not matter. His narcissism is asset and advantage. Biden was not fighting just Trump, but the machine behind him. The media machine (alex jones, etc) invested in Trump and radical republican wing.