Mark Beck was the hero for the Cumbrians, scoring within five minutes of coming off the bench to cancel out Adam Chicksen's first-half opener.
Robinson, whose side are now winless in six, said: "We just aren't getting the rub of the green.
"I thought we were sensational in the first half and we should have been out of sight. But when we play well we just aren't putting teams to the sword.
"We deserved more out of the game. We played a bit into their hands in the second half and made it more difficult for us.
"But not one player shirked responsibility and it's disappointing to only get one point because it's not dropping for us.
"We need to keep working hard and not get too despondent. We have to keep being positive and be realistic about where we are."