Plymouth Argyle must show more discipline in defence, boss Peter Reid has warned.
Reid was speaking after his side's 2-0 defeat to AFC Wimbledon, which left the Pilgrims still searching for their first league win of the season.
"Sometimes in football matches you aren't going to get 90% of the play," he told BBC Radio Devon.
"Sometimes you need to get back and get your shape. We didn't do that today and we paid the price for it."
Plymouth's recent financial issues and relegation to League Two have forced Reid into signing a number of less experienced players.
"I think there's an anxiety in there and we've had a chat about it and it wasn't good enough," remarked Reid.
"I know we've got a lot of young players and I've made excuses but I can't make excuses for that [display]."
Following Tuesday's defeat, the Pilgrims have conceded seven goals in their first three league matches and only picked up one point.
But Reid says he has seen enough on the training pitch to suggest his team are capable of working their way out of trouble.
He said: "You can go out and train but on match days, that's when you need to show what you're like"
"Young players have got to bring that onto the big stage."