Richardson, who handed Francis Jeffers his debut as a substitute, was encouraged to see his side create opportunities but was frustrated with the way they found themselves two goals down.
"There was nothing in the game in the first half except for the goals and we kind of gave them the goals ourselves," he said. "The second goal was questionable on the officials' part and I'll save my comments on that for another day and until I've seen it again.
"In the second half I thought we took the game to them very well and we're very disappointed to be coming away from this match with nothing. There was only one team in the game for long periods of the second half but the damage was done in the first half, which is disappointing.
"We were the team that wanted to play football and get the ball forward in the second half, we were the team having crosses and taking shots."