Robinson said: "The only thing that went wrong was them scoring a goal, because our performance was fantastic.
"But if you don't take your chances you're always liable to concede - we're deeply disappointed.
"The ref made some strange decisions but we can't make excuses for the chances we missed, at this level you've got to take them.
"We kept pushing and tried to go through them, round them and over them. Our performance didn't deserve that result."