The Magpies lost the Premier League game against the Swans 3-2 at St. James’ Park despite taking the lead through 2014 summer signing Ayoze Perez in the 20th minute.
It was Newcastle’s seven defeat in a row in the league and has enhanced their chances of dropping down to the Championship at the end of the season.
Carver was understandably disappointed with his team’s yet another home loss, but he praised his players for the way they performed against Welsh outfit Swansea.
"When you lose so many games your confidence is going to be hit,” the Englishman told BBC Sport. “Again we showed character, the players stayed with it right to the end.
“Ayoze Perez had a good chance at 3-1 down and Siem De Jong got the second goal and we kept going but it's not good enough."
Newcastle are now 14th in the Premier League table with 35 points from 34 matches, just five points above the relegation zone. At the start of today’s games, the Magpies were seven points clear of the bottom three.
Carver’s side are back in action next weekend, when they take on fellow relegation candidates Leicester City away from home at the King Power Stadium.