Philippe Coutinho admits Liverpool must learn from Tuesday's 3-3 Champions League draw with Sevilla, despite the result keeping them on course to win Group E.
Jurgen Klopp's side looked to be coasting to victory on Spanish soil when they led 3-0 at the break, only to suffer a worrying second-half collapse that once again raised questions over their defensive deficiencies.
Wissam Ben Yedder scored twice before Guido Pizarro struck a dramatic late equaliser to rescue a point for Sevilla and deny a shell-shocked Liverpool from qualifying for the knockout stages.
Coutinho put the capitulation down to the players losing focus after such an impressive first half, something they can ill-afford to let happen again in the future.
"It wasn't a good result, we almost felt like we do after a defeat," the Brazil international told Liverpool's official website.
"We had a great first half and then in the second half we let everything unravel and so we were all feeling very frustrated.
"We have to stay awake all the time, 100 per cent. I think that the first half, the way we went into the game, we have to go into the second half [like that] too.
"And I think all of the players, we all switched off a little bit and we thought that at 3-0 it was going to be a little bit difficult for the opposition [to come back].
"That’s what happens sometimes when you play football."
Despite the disappointing result in Seville, Liverpool will still win the group if they beat Spartak Moscow at Anfield on December 6.
"If you had offered us a draw [before the game] that would have been fine and [felt] better than the way the game went," Coutinho added.
"The problem is that we were 3-0 up and playing with great intensity and had a result that was going to be great but then they drew level and that frustrated us.
"But really, it’s a point for us and we are still top of the group, so it was an important point."
|LeBron feeling worn down following Cavs loss|
|Rahm enjoys ´traditional golf courses´|
|Upbeat Spieth eyeing first win of 2018|
|Ovechkin leads Capitals into Stanley Cup Finals|
|Federer: Serena may be the greatest of all-time|
|Copa Libertadores Review: Gremio top group, River and Flamengo draw|
|Celtics rebound with key game-five win over Cavs|
|Warriors duo Thompson, Iguodala questionable for game five|
|Suarez: Iniesta hard to replace at Barcelona|
|Slipper suspended after positive cocaine test|
|Cardinals´ Ozuna absent from line-up because he overslept|
|Ancelotti a ´real coup´ for Napoli as Insigne thanks Sarri|
|Johnston ´amazed´ to see Liverpool in Champions League final|
|Fearless Loftus-Cheek embraces England pressure|
|Butland shocked by Hart absence|
|It´s a football club – Klopp on choosing Liverpool over Man United|
|Emery appointed after secret vote, says Arsenal chief|
|Klopp used Sevilla loss to inspire European title tilt - Henderson|
|Lineker, Stoichkov, Zico - the stars who blazed a J-League trail for Iniesta|
|Golf not fame drives McIlroy|
|De Villiers tributes led by Du Plessis, Kallis and Tendulkar|
|Buttler ´maturity´ is just what England need, says Vaughan|
|Fit-again Wawrinka returns to winning ways|
|Toulouse take giant step towards Ligue 1 survival|
|Jets will not punish players for incurring anthem-related fines|
|F1 Raceweek: Hamilton and Bottas looking to build momentum - Monaco GP in numbers|
|Steelers´ Antonio Brown advises Le´Veon Bell to ´show up´|
|Stephens out in Nuremberg, Stosur wins Strasbourg final rematch|
|Clippers extend coach Rivers´ contract|
|Ancelotti ´thrilled´ by Serie A return with Napoli|
|Carlo´s Angels? Napoli boss poses for unusual photograph|
|Brady will attend Patriots mini-camp despite OTA absence - Kraft|
|World Cup hero, Champions League master - the best of Andres Iniesta|
|Heading to my new home - Iniesta drops massive Vissel Kobe hint|
|Neymar fitter than Brazil expected ahead of World Cup|
|Jardim, Jokanovic reject Chelsea speculation|
|Knight Riders rally dumps out Royals in IPL eliminator|
|Salah, Mane, Firmino trio could blow Madrid away, says Redknapp|
|Napoli appoint Ancelotti after Sarri departure|
|NFL stars must stand for national anthem if on field|
|Mascherano laments Romero injury blow|
|´Mr 360´ De Villiers retires after going full circle|
|Ronaldo already a Real Madrid legend like Di Stefano - Nacho|
|Pep or Pepe? The Spanish footsteps Emery could follow|
|Arizona, New Orleans land Super Bowls as NFL draft heads to Nashville|
|Sarri thanked by Napoli chief De Laurentiis amid Ancelotti reports|
|You never know! - Vettel and Hamilton joke about potential Ferrari link-up|
|It´s a silly question - Carrick insists Pogba has Man Utd future|
|Yates protects Giro lead as Viviani takes fourth stage win|
|Ozil one of Arsenal´s biggest talents - Emery|
|Fastest ODI hundred, 278 not out - De Villiers´ best knocks|
|Deschamps: Rabiot has made a huge mistake|
|Arsenal players can challenge for titles, Emery insists|
|Salah can seal Ballon d´Or with Champions League win - Riise|
|I want Real Madrid to lose Champions League final - Alba|
|Leverkusen sign goalkeeper Hradecky|
|Arsenal job a ´dream come true´ for Emery|
|De Villiers hailed as a ´colossus´ after quitting Proteas|
|Benitez expects Lascelles to stay amid reported Liverpool interest|
|Saha tells Martial: Stay and work for Manchester United future|
|Atletico Madrid defender Savic undergoes hip surgery|
|Bess to make Lord´s debut against Pakistan|
|Vissel Kobe announce news conference amid Iniesta speculation|
|Yan Dhanda leaves Liverpool for Swansea|
|Injured Chung out of French Open|
|I wish he´ll come to PSG - Motta wants Buffon reunion|
|Guardiola praises new Arsenal boss Emery|
|Defensive woes, travel sickness and Ozil´s role - Emery´s Arsenal to-do list|
|WATCH: Anthony Joshua serves up Stephen Curry assist|
|De Villiers announces international retirement|