Eoin Morgan felt England were outplayed in all departments in losing the one-off Twenty20 International to Sri Lanka.
The tourists made 183-7 after Morgan put them into bat, their final total given a boost by some late hitting from all-rounder Thisara Perera.
The left-hander made 49 from just deliveries - including taking 22 off Chris Jordan in the 19th over - after being dropped when he had 20 to his name, one of three chances that went begging for the hosts in the field.
Alex Hales hit 66 in reply and Jos Buttler (26) and Ravi Bopara, who finished up 28 not out, provided late cameos, but England still ended up falling short at 174-7.
"Yeah, I think we were (outplayed in all departments)," Morgan told Sky Sports.
"It's devastating. In the first 15 overs we bowled really well and fielded okay and then we sort of fell away.
"No excuses here. Perfect fielding conditions and we dropped three. It's inexcusable."
Morgan was in close proximity to see Carberry spill Perera, with the pair at one stage looking like they might collide attempting to get under the high ball.
"I went for it initially - shouted for it - and as I got closer, 'Carbs' kept shouting his name.
"So I stood as close as I could to him, to try to get a rebound if he happened to drop it. People drop catches all the time, and that one was quite costly."
One bright spot for England in defeat was the performance of debutant seamer Harry Gurney, who picked up 2-26 from his four overs and was also unfortunate to see Perera dropped off his bowling.
"He bowled magnificently," Morgan added. "He transferred his form from county cricket into the international stage - that's very promising to see."
The left-handed batsman was also quick to praise Sri Lankan counterpart Lasith Malinga; the paceman picked up 3-28 and, crucially, only leaked four runs during the penultimate over of England's unsuccessful run chase.
"It's not often in Twenty20 cricket that you can get dominated by a bowler so much as Malinga," Morgan admitted. "It's more dominated by the bat, obviously.
"But he crops up in everyone's team meeting. He's someone you have to talk about a lot, how you're going to negotiate him - if you have the option of taking him on.