Mayor Bill de Blasio insists only “insiders” think he was an absentee mayor during his failed four-month run for the White House — even as he failed to secure $450 million in state funding for the city’s public housing, left the vital Taxi and Limousine Commission chair unfilled and allowed homelessness and crime to spike on the subways.

“I think insiders like to talk about it a certain way, but everyday New Yorkers are seeing things happening all the time,” de Blasio said at a Gracie Mansion press conference Friday a few hours after announcing he was ending his quixotic campaign.

New Yorkers in his own Park Slope neighborhood angrily disagreed.

“He has a certain arrogance bubble around him that reinforces his notion that he could be destined for great things,” longtime Brooklyn resident Cliff Rosenthal, 74, griped to The Post.

“The absolute failure to be effective around NYCHA, around public housing, it’s an utter shame,” Rosenthal said.

Octogenarian Brooklynite Lorna Nembhard tsk-tsked the term-limited mayor for his doomed-from-the-start White House dalliance.

“He shouldn’t have spent time running for president. He should have been doing his job,” Nembhard said.

De Blasio insisted he was “working constantly throughout the last four months on things that really matter to New Yorkers.” He cited passing a $92.8 billion city budget, boosting pay for pre-k workers and “really important things in Albany.”

What he didn’t mention was glaring.

The mayor is still waiting on $450 million the state promised two years ago to fund repairs for the city’s 326 public housing developments.

While he was talking to no more than a dozen voters in Iowa and New Hampshire, the mayor’s nominee to run the city Taxi & Limousine Commission, Jeff Roth, withdrew from consideration for the key post after City Council Speaker Corey Johnson panned his performance at a hearing as “awful.”

At the Gracie Mansion press conference de Blasio also made no mention of the city’s beleaguered subway system. More than 2,700 people were found living in the subway in 2019, compared to 1,770 last year. Sex-related complaints on the city’s underground transit system also jumped to 624 compared to 609 for the same period last year.

The list continues. The mayor admitted he wasn’t at all involved in the MTA’s new $51.5 billion capital plan, he was in Waterloo, Iowa, when a July blackout left 70,000 Manhattan residents without power, and he couldn’t convince state lawmakers to pass a bill reforming the admissions process to the city’s elite public schools.

And, oh yeah, he spent just seven hours at City Hall in May, the month he launched his campaign.

Additional reporting by Nolan Hicks and David Meyer