Cheltenham Town defender Craig Braham-Barrett has apologised to fans after his side were dumped out of the FA Cup by Conference club Dover Athletic.
"I apologise to the fans because they shouldn't be watching that," said the 26-year-old left-back.
"We should be beating teams like this. All I can say is sorry."
He added: "I'm not going to be able to sleep tonight. It was just so disappointing."
Cheltenham made a good start to the season under former boss Mark Yates, winning five of their opening seven games, but a run of four straight league defeats led to his sacking last month.
Former Bristol Rovers and Torquay manager Paul Buckle took over from Yates two weeks ago but watched his side lose their second-round tie after an 83rd-minute strike by Dover defender Connor Essam.
And Buckle says he knows there are issues in his squad that he needs to address.
"I don't know if it's belief or if it's fitness levels," said the 43-year-old. "Our fitness needs to improve and our match understanding needs to improve.
"We need to keep encouraging them. I need to be honest with them, like I have in the dressing room, but I need to keep coaching them.
"We have to take this on the chin and get the fans back on side. They've seen enough poor performances to last them this year. We've got to improve the performances and the results."