Manager David Holdsworth felt Lincoln City were too easily out-fought as they lost 2-1 to Alfreton Town in their FA Cup replay at Sincil Bank.
Sam Smith put the Imps ahead but Anton Brown levelled before Nathan Jarman's second-half penalty sealed the win.
Holdsworth told BBC Lincolnshire: "We showed a lack of responsibility.
"You've got to have broad shoulders out there, especially against a streetwise side like Alfreton, but right now we've got too many soft touches."
Nick Draper overcame an illness to start, solving the Imps' goalkeeper crisis, with Joe Anyon suspended and Doug Lindberg injured.
Smith headed home Gavin McCallum's cross to give Lincoln a 20th-minute lead but the visitors equalised seven minutes later when Brown headed in from a long throw.
Alfreton's winner came when Anthony Wilson was brought down by goalkeeper Nick Draper with Jarman, who also scored from the spot in the original tie, converting the penalty.
And like Saturday's 1-1 draw there was also a sending off, with Alfreton's Jake Moult dismissed for picking up two yellow cards in the closing stages.
Holdsworth added: "I'm extremely disappointed and I can see why the club's in this position.
"Have we been beaten by real craft? No, we've beaten ourselves and that's not good enough.
"Right now we don't need footballers, we need horrible, gritty, nasty people on the pitch. Some of the best teams in the world were horrible and had that grit about them.
"I don't think we'll ever be the best team in the world but all I ask for is passion, belief and that hunger and we've got too many soft touches and that's been hanging around, looming over the dressing room for a long time."