"I don't think we deserved to lose," Keane said after the match on Sunday afternoon.
"It's questionable if we've done enough to win, but we could not provide the goal at the end.
"We got the opportunities. At least test the keeper but we didn't really test him and we gave a bad goal away.
"It's hard to take.
"I've no problem with the effort, we just need a bit more quality in the attacking third."