FLORHAM PARK, N. J. — Coach Rex Ryan declared last week the New York Jets were better, “in a zillion ways,” than they were the last time they faced the Buffalo Bills on Oct. 26.

They were a lot closer to a zillion ways worse in a 38-3 loss to the Buffalo Bills in Detroit on Monday night. And now Ryan’s hopes of remaining the Jets’ head coach beyond the season finale are somewhere around a zillion to one.

Even the perpetually optimistic and defiant Ryan seemed resigned to his fate after perhaps the worst loss of his six-season tenure. The Bills, who had lost two straight and didn’t practice last week during the epic blizzard that forced the game to be moved from Orchard Park. Still, they blew apart the Jets, who were on a one-game “winning streak” and well-rested coming off the bye and a normal week of preparation in chilly but snowless New Jersey.

“Horrible performance,” Ryan said. “We couldn’t do anything. Couldn’t block. Couldn’t tackle. Couldn’t cover. It was just an awful performance. I’m the guy responsible, I know that.”

He also knows there’s almost no way he’ll be coaching the Jets beyond the start of the workday on Dec. 29 — i.e. “Black Monday.” Ryan made that much abundantly clear in declaring he’d be the head coach the rest of the season.

While he does have a little more time, Ryan is already out of ways to try and correct the Jets’ post-bye week doldrums.

With Monday’s resounding loss to the Bills, the Jets fell to 1-5 following a bye under Ryan. Each of those losses has been more lopsided then the preceding one: The Jets lost by two to Jacksonville in 2009, by nine to Green Bay in 2010, by 21 to Seattle in 2012 and by 23 to Buffalo last year.

Ryan tried to change things up this season by holding three practices at the start of the bye week before giving the Jets four straight days off.

Didn’t work.

“Off a bye we tried everything,” Ryan said Monday night. “But obviously this wasn’t the answer.”

So, what next?

“I know for a fact, unless it changes drastically, that I will be the head coach here for the next five weeks,” Ryan said. “That’s what I know. And I’m going about my job like I always do.”

On Monday, that meant defending the players that let him down while refusing to express regret over the unrealistically rosy outlook he offered in the days leading up to the game.

“They didn’t quit,” Ryan said of the Jets. “We just never made any plays. We didn’t quit.”

Ryan then provided a positive spin on the Bills’ final touchdown, a 30-yard run by backup Anthony Dixon in which he went untouched beyond the line of scrimmage.

“We had one play where they (ran) a ball up 30 yards,” Ryan said. “We put a blitz in, kind of mis-timed it. They hit it. We missed a tackle in there. Guy runs for 30 yards.

“We didn’t quit. We got outplayed.”

As for declaring how much better the Jets would be on Monday than they were 22 days earlier?

“I’ve said a lot of things that you could say I regret,” Ryan said. “But at the end of the day, I don’t regret anything I say. That’s how I believe. And I was proven wrong.”

Was he ever.

NOTES: DE Muhammad Wilkerson (toe) was scheduled to undergo an MRI on Tuesday after injury in second quarter. … TE Jace Amaro (head) is in the NFL’s concussion protocol after taking two hits that might be defined as targeting.