Steve Burr has revealed his frustration at being powerless to prevent his players giving away soft goals.
Welling United and Macclesfield Town capitalised on abject defending and individual errors this week to extend the Blues’ losing streak to three games.
“We’re not helping ourselves with the way we are defending and it’s very difficult,” said Burr.
“It’s frustrating and it’s concerning for me. We’ve got experienced lads in the side and they have to take some responsibility.
“I can’t physically get inside people’s heads and make them make the right decision when they are on the pitch.”
Impressive wins over Barnet and Woking in his first two games in charge marked a dream start for Burr.
But elation has now made way for exasperation as the Blues continue to shoot themselves in the foot.
“The reality is we have got to start winning games and these three defeats have not helped us at all,” said Burr.
“We are not getting free headers in the box and teams are not letting the ball bounce for us to nip in and score but we are doing it for them.”
Burr has chopped and changed in search of the right formula and now feels his players must prove they have the desire to be part of the club.
He said: “I certainly want to be here and I’ll fight tooth and nail to keep us up but I want the players to show that too.
“Everyone has had a chance and I want them to go out there and say ‘it’s my shirt and I’m going to make sure it’s my shirt for the next game too’ but that’s not happening.
“The support at Macc was fantastic and we are very fortunate to get that support with the position we are in.
“The players have to realise that and we have got to give the fans something back.”
Burr took heart from the number of chances his team created in the 3-2 loss at Macc with John Rooney impressing.
He said: “Going forward I thought we looked good but if we can’t do basic things right at the back then we’re going to be struggling.
“We’re having to work our socks off to create chances and score goals but we are giving our opponents goals without them having to work hard.”
Burr’s side travel to Aldershot Town on Saturday (3pm).