#2 Jurgen Klopp's substitutions were all wrong

Why Sturridge, when Firmino had to be taken off? With all due respect to the ability and the skill that Sturridge possesses, he's barely played any football recently, with no first-team minutes since the 7th of January.
To throw him into the cauldron of Manchester United v Liverpool in that kind of situation was just a little bit daft. There was the option of putting on Naby Keita or Xherdan Shaqiri, as well.
And then, when it was obvious that Milner wasn't having a very good game, Jurgen Klopp should have taken the gamble and put on Trent Alexander-Arnold, who could have produced a lot more, if he had gotten into the same positions that Milner did. He would've been allowed to - if Milner's old legs could bomb up and down, and keep finding that much space, Alexander-Arnold would've been a handful as well.
With the game meandering along, and absolutely nothing coming from midfield, it was baffling that Klopp chose to give Naby Keita a grand total of ZERO minutes of football. Yes, the Guinean hasn't yet been all that was promised after his move from RB Leipzig, but he has shown in recent weeks, that he can provide the necessary drive from midfield.
Neither Divock Origi nor Sturridge really made the necessary impact, and maybe that's where the title could be lost for Liverpool. Where their rivals can bring on Leroy Sane, Gabriel Jesus and Riyad Mahrez, Liverpool's fall in quality from their starters to the reserves is a little too drastic.