Dagenham & Redbridge coach Lewis Young admitted home defeat against Wealdstone was 'not good enough' as their struggles at Victoria Road continued.
The 2-0 reverse against their London rivals means Daggers have now lost nine of their 12 home games in the National League this season.
And it came a week after their FA Trophy exit on penalties at the hands of National League North side Peterborough Sports.
"It's not good enough. From both sides. From us as staff but also on the players side," Young told the club website.
"I think that's 10 now at home, it's nowhere near what we was expecting, coming into this season."
Having seen Myles Weston leave for Bromley late last week, Daggers began well with Conor Lawless and Frank Vincent forcing saves inside the opening 10 minutes.
The same pair had further chances before the break, but Stones struck first when Adarkwa turned home Tarryn Allarakhia's cross on 50 minutes.
And after Inih Effiong and Harry Phipps had efforts blocked, Daggers saw David Longe-King red-carded in the dugout after being substituted.
Allarakhia added a late second for the visitors in stoppage time, with Young adding: "The first 35 minutes we was really on top and looked like we should have the ascendancy and going on and should be taking the game.
"Those half little moments we didn't take. That's what happens. The second half was really disappointing.
"Take the goals out of it. The first goal, if you said playing against Wealdstone, they're going to score from a cross and have that much space, in the middle of our box. Yesterday when we looked at the team and how we were going to set up, I definitely wouldn't have said from the team we picked.
"It's just a moment we find ourselves in. We'll have to see what happens going forward."
Defeat leaves Daggers down in 18th place, just two points above the relegation zone.
And they need a boost during the festive period as they head to bottom club AFC Fylde on Saturday, before hosting mid-table Eastleigh - the former club of manager Ben Strevens - on Boxing Day.
"Ultimately, it's that self belief," said Young.
"That understanding each other's strengths.
"We have had, in the previous spells of some of the players careers, loads of goals in there, and ultimately we haven't had that this season.
"That's on us and we've got to have a long, hard look at ourselves.
"The away form we've got, can only last for so long.
"It seems it's a real good part of us, but you'd say your bread and butter of your home games is where you need to be picking up results.
Ultimately we're not."
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here