Demetriou sensationally dumped Origin hooker Cook from the team on Tuesday.
“Of course I’m angry,” Cook told radio show Big Sports Breakfast on Wednesday.
“I’m frustrated, angry, sad. I had all the emotions yesterday.
“I do want to be out there on the field giving my best for the team, to try and get us out of where we are.
“A couple of losses this year – not the best start to the season.
“I just want to be out there helping them and doing my part to get us out of here because all we can do is to keep working harder and harder and keep trust in what we’re doing to dig our way out of it.
“That’s probably why I’m probably a bit angry and frustrated; because I just want to be out there with them trying to help.”
Cook’s demotion headlines a trio of sweeping changes at South Sydney as the embattled coach scrambles to remedy the club’s poor start to 2024.
With superstar fullback Latrell Mitchell suspended for three weeks, Jye Gray will make his NRL debut in his place.
Cook is the second big-name player to be dropped by Demetriou this season after halfback Lachlan Ilias was axed last month to make way for Dean Hawkins.
In some good news for Souths, winger Tyrone Munro will return from a shoulder injury to make his first appearance this season.
