Liverpool captain Virgil van Dijk admitted his side are falling short of their usual standards after being held to a 1-1 draw by struggling Burnley at Anfield on Saturday.
The reigning champions have now drawn four consecutive Premier League matches and were met with boos from sections of the home crowd at full-time.
Florian Wirtz put Liverpool ahead in the first half, 10 minutes after Dominik Szoboszlai failed to convert from the penalty spot, but Marcus Edwards struck after the break to earn Burnley a point.
“Frustration is definitely what I’m feeling,” Van Dijk said.
“After about 60 minutes we became sloppy again, and it’s not the first time."
"We’ve talked about it before, but clearly we need to deal with it properly.
“We’ve got the next 48 hours to look at ourselves with the staff, go through everything and then we have to act."
"Right now, I think there’s something missing and we need to change that.”
The result leaves Liverpool with an unwanted record, as this is the first season since 1980-81 in which they have failed to beat any of the promoted sides at Anfield.
They sit seven points behind third-placed Aston Villa, who still have a game in hand.
“That’s the reality,” Van Dijk added.
“We need support. I don’t enjoy hearing boos from our own fans.”
Attention now turns to the Champions League, with Liverpool facing a difficult trip to Marseille on Wednesday.
The Reds are ninth in the league-phase table, meaning they are currently outside the top eight places that guarantee automatic progression to the knockout stages.
Van Dijk is braced for a tough test against Roberto de Zerbi’s side.
“It will be very hard,” he said.
“The atmosphere will be hostile and De Zerbi’s teams always make things difficult.”
Liverpool are set to be boosted by the return of Mohamed Salah after Egypt were beaten by Nigeria on penalties in the Africa Cup of Nations third-place play-off.
“Everyone should be excited about that,” Van Dijk said.
“Mo has the quality to win games."
"He’s hugely important to us, both on and off the pitch, and when he’s back he needs to help us push on.”
