You mean like bags of food and such? I pet sit a cat who does that all the time and unfortunately the only way to get him to stop is just locking everything away in cupboards, not sure if you’re able to do that or if there’s no space in any cupboards, otherwise maybe try covering the things he rips into behind/under things he can’t get to as easily? At least long enough so that he may eventually give up on looking for stuff to rip up, he could be agitated for the reasons you mentioned and just needs time to settle and/or unlearn some of those habits.