Truro City boss Lee Hodges admitted he was disappointed with his side's effort in the 3-0 loss to Sutton United.
Harry Beautyman gave Sutton the lead on 28 minutes before Craig Watkins' scored shortly before the hour.
A free kick from Tom Kavanagh in the last minute sealed a comfortable win for the visitors.
Hodges told BBC Radio Cornwall: "I just felt they wanted to go in for tackles and to get hurt and we didn't really and were half-hearted in the tackle."
He continued: "They were on the front foot and they were winning every second ball and that disappointed me."
Hodges was critical of the application shown by some of his players.
"I don't mind losing if you're giving it everything but at times I felt we weren't 100% at it and looking round for someone else to do that tackle instead of thinking to yourself 'I'll go in and do it," said.