Carlisle United boss Greg Abbott says Saturday's 3-0 defeat at Dagenham & Redbridge is the type of result the club needs to stamp out next season.
The Cumbrians will finish the League One season in mid-table, and currently lie 12 points adrift of sixth-placed Bournemouth who have 71 points.
"We have had half a dozen defeats all season which have been absolutely dire," Abbott told BBC Radio Cumbria.
"We have to try to eliminate those half a dozen games for next season."
Abbott's side have enjoyed a relatively successful campaign, with the Johnstone's Paint Trophy secured by a 1-0 victory over Brentford at Wembley in April, as well as league security.
However it was the nature of Saturday's loss that frustrated Abbott enough to criticise his squad.
"Even when we have been beaten we have given good accounts of ourselves, but today we didn't," Abbott added.
"We have had a performance today below par against a team that had edge and purpose and a real desire to win, and we never found that today and then you are always on the back foot.
"Without singling out individuals, as a team, we didn't perform. By and large there were seven or eight that were under par, and when you have got that situation you are going to be struggling.
"We have probably done better than most, and that is why we are not near the foot of the table and we have been to Wembley and won a cup final."
The Cumbrians are 11th in League One, with 59 points from 45 games.