Following a 28-22 loss to the Houston Texans, the Patriots went to the locker room down 20-7 on Sunday hearing boos from the Gilette Stadium crowd.
"You hear cheers, you hear boos, that's part of being in sports," Brady said in his postgame press conference.
The reigning champions had three three-and-outs, one blocked field goal, a turnover on downs, and an interception following their initial touchdown drive in the rematch of last year's AFC Championship Game.
In the past two weeks combined, New England has just 10 first-half points.
"I think we're just trying to figure out what works. So, I think you have an idea and then you see how the game unfolds and then you've got to make some adjustments," Brady said.
The Patriots bounced back and outscored their opponent after halftime, but it wasn't enough to avoid back-to-back losses.
Kansas City outgained New England in yards (346-278) and had more first downs (20-17), ultimately beating the AFC rival 23-16.
The Patriots will try to snap their two-game losing streak against the 1-12 Cincinnati Bengals in Week 15.