Free time destruction

I'm new to rats, had my two girls for almost two months now and I really need to ask some questions! I try and let them out for at least an hour every day and I rent and share a bathroom so the only place they can have free time is in my room with me. this would be totally fine because I bought a gate/cage to block them from getting into potentially dangerous stuff but they are doing their best to destroy my room.

they are tearing holes in my carpet, peeing all over said carpet and the walls for some reason and chewing on and digging in the few plants they can reach. I've tried giving them all sorts of chew toys ( blocks soaked in juice, hard foods, cardboard, fabric even) but nothing has stopped them from going for the carpet.

Im trying to switch to using the cage for their free time but after having a while room to run around in it seems a little sad and they keep trying to get out. does anyone have any suggestions about what to do?? I'd like to give them the most space I can but I can't have them destroying stuff.