Mark Hudson headed into his close-season break having apologised to Huddersfield Town fans after a miserable end to the Championship campaign.
Town conceded nine goals in losing at Bristol City and at home to Brentford to finish 19th.
And skipper Hudson admitted: “The last two games have not been good enough, and I apologise to everyone.
“You don’t want to finish the way we did.
“It is disappointing to be beaten like we were in the last two games.
Watch David Wagner analyse Brentford defeat
“I don’t know if that’s the lads switching off or whether it has just been one of those spells but, like I’ve said before, it’s a building process.
“Overall, the season has been bright and we have learned a lot.
“But as a group, we’ve still got more to learn.
“I think we have coped well with the transition since the boss came in six months ago.
“We have learned a new style of play and we are still enjoying it.
“Going forward, we will have a full pre-season under the boss when we start again.”
The 34-year-old centre-back, fresh from signing a new three-year contract which includes a transition to coaching, believes Town must start to defend more as a team.
He reckons the recent glut of goals against isn’t all down to the defence.
“It isn’t just about the back four, it is about the whole 11,” he added.
“We were quite open against Brentford and it is something we will work on improving.”