living with a bunny means accepting a certain measure of chaos.
in truth, you have to adapt to your rabbit.
first, keep all cords and anything you don't want chewed out of rabbit eyesight, smell, hear, and feel capacities. you can wrap all cords in pipe cleaners, then pin them up high so that the rabbit cannot chew them. if you look at our bookshelves, you'll see that the bottom two shelves are either empty or have metal containers that we filled with stuff that the rabbit couldnt chew or get into.
second, anying that you can't move needs to be sprayed with something rabbits don't like. i used to polish my furniture with olive oil in which i soaked garlic and habenaro peppers. this makes it spicy-hot. this will keep them from chewing furniture, etc.
third, your rabbit is obviously a chewer/digger--mine was too. we ultimately gave up on carpets and bought laminate. he learned how to walk on it, no problem. it only took a day. we put out bath mats for him to sleep on in his favorite sleeping spots, and so he had comfy spaces to rest his bunny body.
if you can't afford that, spray the carpet with the spicy stuff. i would use a vinegar with habenaro pepper blend. the scent should be deterent enough. of course, everyone will smell it.
as for the litter box, this requires some training. Rabbit urine is very thick and heavy and has a strong scent. rabbits will follow that smell to a given space. she probably has a favorite spot in which to pee, and so you want to make sure to clean that up completely.
start by taking the urine up with paper towels, and then use all of the cleansers and neutralizers that you have to get the smell out of the carpet. put the urine-filled paper towels into the litter box, and then begin to encourage the rabbit to use it. Rabbits make a face when they're about to pee--so look out for it--and as soon as she makes that face, pick her up (she'll hold the pee then) and put her in the box. she will start using it.
if she pees anywhere else, be sure to neutralize the smell as best you can.
but seriously, if possible, get new floors. LOL
as for the issue of pooping everywhere, some rabbits never get the idea of pooping in the box. October j was an 85% pee in the box, 15% poop in the box. This means that it was 15% pee outside of the box and 85% poop outside of the box.
i would just sweep each evening and morning.
our guy was a total free roamer, so i just lived with poop on the floor until the end of the day, otherwise, you're doing nothing but sweeping poop 24/7. of course, i didn't have any kids when october j was alive, and no adult is going to put poo in their mouths.
so, if you have little ones, educate them about rabbit poop and suggest that they leave it be until you sweep it once the bunny is up and away.