The reigning Premier League champions were held to a 0-0 draw at St. James’ Park on Wednesday, with Salah missing two big chances for his side.
Liverpool’s failure to earn a victory means they have now won just one of their last eight league fixtures away from home.
And despite Newcastle’s valiant defending – coupled with the efforts of man of the match goalkeeper Karl Darlow – Salah perhaps should have sealed all three points.
The Egyptian was twice put in on goal in one-on-one scenarios, but squandered both attempts.
His first was tipped round the post by the smallest of touches off Darlow’s glove, before putting his next memorable effort wide late in the second half.
And aside from the two opportunities, former Reds striker Crouch feels Salah did not contribute enough to Liverpool’s cause.
“Let’s be honest, it didn’t click,” Crouch told Amazon Prime.
“I think certainly [Sadio] Mane in the first half… Salah was non-existent.
“Having said that, Salah had the best chance of the game and it was unlike him.
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It’s been an extremely interesting start to the season for Jurgen Klopp’s men.
They got their title defence off to a shaky start as they edged out a seven-goal thriller against Leeds, before going on to conceded seven in a hammering by Aston Villa.
Virgil van Dijk’s season was ended by injury in the 2-2 draw at Everton, leaving the title favourites looking far less secure at the back – especially with Alisson’s injury worries too.
But there’s no slowing down in what is going to be a busy campaign – with Klopp ensuring his men continue at full pace as they bid for more title glory.
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“Nine times out of ten you expect him to bend that in. He didn’t quite get the curl on it that time.
“A little bit disjointed.”
Jurgen Klopp did his best to find the positives following the match, despite Liverpool all-but surrendering their lead at the top of the table.
Closest rivals Man Utd are now just three points off top spot with a game in hand.
Of more concern to Liverpool will be the fitness of defender Joel Matip, who has been ruled out for three weeks with injury, and could now miss the showdown with United next month.
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That leaves Liverpool without a recognised centre-back for the clash at Anfield, and Crouch feels it is imperative Klopp uses the transfer window to make a new signing.
“I think getting a centre-half in January is key,” he said. “I think they have been looking at it, I think they have identified people, behind the scenes they will be working on it.
“They cannot rely on the young lads and a midfielder at centre-half.”
Nat Phillips deputised in the absence of Matip, while Rhys Williams will also be in contention for their next fixture away at Southampton on Monday night.