Barrow head coach Nigel Wright has criticised his side's lack of ruthlessness in Thursday's 30-26 Championship defeat by Sheffield.
Raiders led 26-14 with 20 minutes remaining at Don Valley, but conceded three tries without reply to end the game with just a bonus point.
"They're professional people, they know how to kill the game off, and they didn't," Wright told BBC Radio Cumbria.
"The game is won, we were 12 points clear and we didn't play sensibly."
Wright added: "There were a couple of individual errors, a lack of discipline around the defence again, and talking to referees invites field position.
"These are good sides that we're playing - we've played Batley, Featherstone and Sheffield in the last few weeks and lost by a combined 20 points.
"That's pretty tough to take, and the boys are going to have to realise pretty quickly that if they don't pick their act up they're not even going to make the semis."
Sheffield made the early breakthrough with a converted try from Alex Szostak, but Jack Hughes' effort levelled for Raiders soon after.
After a penalty goal apiece, the hosts again took the lead through Menzie Yere's score, but tries from Jamie Rooney, Michael Knowles and Gary Broadbent looked to have put Barrow into a winning position.
However Szostak notched a second to close the gap for Sheffield, and further touchdowns from Simon Brown and Quentin Laulu-Togagae sealed defeat for the Cumbrians.
Raiders have struggled with injuries this season, and their jinx continued with knocks to three key players.
"We lost Matt James at half-time, we lost Mark Gleeson at half-time and we lost Anthony Blackwood 10 minutes into the second half," said Wright.
"We've got some bumps, some bruises and we'll assess that over the weekend, and the boys will be back in early next week to get back on the horse.
"The players know how important the game against Halifax is and we can't afford to lose."