INGLEWOOD — The Cardinals owe their fans an apology. Especially the brave-hearted believers who swaggered into SoFi Stadium on Monday night expecting their football team to do the same.

Then it’s time for a change.

A new plan. A new head coach. And to complete the reboot, the team should unveil a host of brand new uniforms, as a cosmetic gesture of good faith.

It’s time to raise expectations across the board.

The Cardinals embarrassed themselves on Monday, slinking into the offseason with a 34-11 playoff loss to the Rams. In the process, they embarrassed every Arizonan who clung to delusions that the team would regain its Road Warrior mentality; that Playoff Kyler would be unstoppable; and that the return of J.J. Watt would provide all the necessary fuel.

“We put up an embarrassing performance,” Watt said. “There’s no other way to put it, really.”

As a result, the Cardinals joined the pile of NFL wildcard roadkill. But this was not a team that scrapped and clawed their way into the postseason. The Cardinals were 10-2 on Dec. 5. They were once the best team in professional football.

Don’t dare call this progress.

“A massive failure,” Watt said.

And yet Kingsbury will surely return for a fourth year in 2022. General Manager Steve Keim recently claimed his head coach was doing a “phenomenal job” and that he and owner Michael Bidwill were very happy with his performance.

But running it back…