Russell Slade felt it was “slightly disrespectful” for Charlton fans to boo a substitution during the 1-0 defeat to Rochdale.
The visitors took the lead after 25 minutes when Joe Bunney’s deflected cross was headed home by the unmarked Calvin Andrew.
Despite several openings – and skipper Johnnie Jackson missing a penalty – the Addicks failed to equalise as their winless run extended to seven games.
As the energetic Ricky Holmes made way for Leeds loanee Jordan Botaka in the latter stages, boos rang out around the Valley.
When asked about the response to the substitution, Slade said: “I think it’s slightly disrespectful for the man coming on anyway, whenever a sub’s made, and I don’t think that’s right.
“The mentality should be that we’re all in it together and when you make subs it’s there to try and make a difference and change the dynamics as he [Botaka] did so well at Fleetwood.
“Within two minutes he broke the line and had a chance. He nearly made an impact very quickly so it’s important that all our players are a value to us.”
Addicks starlet Ademola Lookman had the first chance of the game but failed to beat stopper Josh Lillis with a shot from inside the box.
After a scrappy period the Dale went in front as Bunney was allowed to drive down the left and find Andrew who headed past Declan Rudd.
Keith Hill’s side could have doubled the advantage ten minutes later but the Charlton defence eventually managed to clear a goalmouth scramble.
Goalscorer Andrew tested Rudd with a powerful strike just after the break, before the Addicks were awarded a penalty.
Holmes drove into the box and was caught by Bunney – Jackson stepped up but was denied by a fine Lillis save.
The Addicks continued to press and Morgan Fox tested Lillis with a close-range effort before Lookman fired over the bar.
Second-half substitute Lee Novak then saw a shot cleared off the line as the Dale resisted late pressure to claim the three points.
It was a tense atmosphere as Charlton once again failed to seal a win and Slade admitted it was up to the team to improve the mood at the Valley.
“When you’re at home you obviously want the crowd behind you, but that’s also down to the performance as well,” the 55-year-old said.
“They have to be excited by what’s happening and clearly they’re not pleased and nor am I at the minute. The last two games have been disappointed for sure.
“You don’t want that to start affecting players’ choices and confidence. That comes down to having a tough mental attitude again.”
Charlton have now only scored three goals in their last five games and Slade once again bemoaned his side’s lack of edge in the final third.
He added: “To be honest we huffed and puffed and had a few chances but there lies the problem in the final third.
“There wasn’t enough clever play or ruthlessness in terms of the pass or the final ball. It didn’t materialise.
“I’m not here to make excuses. Things like missing penalties happen. We kept going without quite doing enough in the final third. We became even more dominant but didn’t come up with the answers.
“There’s other things like being progressive with the ball but for me the major problem was in the final third area to find the right combination and hurt Rochdale.”
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