Robertson has admitted team always have a chance against Liverpool and voiced his frustration that the Reds keep making the same mistakes.
Jurgen Klopp's side were held to a 1-1 draw with Newcastle in their last match after Joe Willock equalised for the visitors in the dying seconds.
"It pretty much sums up our season," Robertson said. "We don't learn our lessons, we keep on doing the same thing making the same mistakes.
"Newcastle deserved their goal, the two of them, I think that rule is ridiculous.
"We could be sitting here with a defeat, which is baffling with the amount of chances we had, the first half and even second half and the control.
"What we were based on was that we were so good at seeing out results and we can't do that just now. It's as simple as that.
"Teams always have a chance against us, they always build in confidence the last 10 minutes and believe they can get something. That's not like us.
"We can't keep on coming out and speaking a good game, we're not doing it on the pitch and games are running out."