Trump, the front-runner for the Republican nomination to take on Democratic President Joe Biden in the 2024 election, is now facing four concurrent criminal prosecutions, including two involving his attempts to overturn his 2020 loss to Biden.
"It was my decision," Trump told NBC's "Meet the Press" program, that the election was "rigged" against him, adding that he relied heavily upon his own "instincts" in coming to that conclusion.
Trump has continued to make false claims that the election was stolen from him through widespread voting fraud.
Asked why he dismissed the views of lawyers in the White House and his campaign that he had lost the election, Trump responded: "Because I didn't respect them," Reuters reported
Trump singled out former US Attorney General William Barr, who told him that he had lost the election, as one of the lawyers whose advice he did not follow.
"I listened to some people," Trump said. "Guys like Bill Barr, who was a stiff, but he wasn't there at the time. But he didn't do his job because he was afraid."
Trump has pleaded not guilty in all four criminal cases, including a federal prosecution in Washington and a Georgia state indictment involving his attempts to recruit a slate of phony electors for congressional certification of the 2020 election results.
His comments on Sunday could undermine one of his possible legal defenses - that he relied on the advice of his lawyers in continuing to challenge his defeat. US courts threw out dozens of legal challenges from Trump's campaign and allies following the November 2020 election.