The Reds have struggled for form over the past few months and their right-back has experienced similar difficulties.
Alexander-Arnold has enjoyed a rapid rise but has been unable to translate his club form onto the international stage.
Gareth Southgate has accepted part of the blame for the 22-year-old’s failure to light it up with the Three Lions.
Gerrard though has disagreed with his decision to leave Alexander-Arnold and claimed he needed support – not to be dropped.
“One thing’s for sure, I’ll always be there for Trent,” said the Rangers boss.
“It goes without saying, any second of the day. I wouldn’t make the first move. He’s a man himself. He knows where he’s at. Gareth Southgate makes the decisions there.
“I don’t necessarily agree with that decision. But I’m not the England manager. I think Trent is the best English right back in the country.
“One thing I’ve learned from being a player is you can’t always be 10 out of 10.
“When you do come off, you need that support, love and attention from your manager more than anyone else.
“So, I was surprised by the decision but that’s my opinion and my opinion is not important in this.
“Trent is a world-class right back, he’s the best right back the country has got. We’ve got other fantastic right backs by the way.
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“But in terms of the loaded side of the question, I’m there for Trent and any of the other Liverpool players at any moment of the day.”
Southgate is spoilt for options at right-back and chose to select Reece James, Kieran Trippier and Kyle Walker.
[email protected] (Samuel Meade)