Car Finance Hell - stuck paying monthly for a car I’m getting no use out of, please help!!!😢

Hello new poster here, need some minds/ideas please. I took on an automatic Nissan juke on finance in 2020 @ £160 a month all great! 1 year in needed new break pads for £600, frustrating but sorted that fine. Now 2.5 years in, engine check light comes on I’m told CVT is the issue likely need a new gearbox at a cost of no less than £3k looking at up to £7k. I was offered to pay for this on monthly instalments, mind you the car is now only worth about 7k. Couldn’t think of a worse idea tbh. I’ve also been offered to trade it in but my options are limited, only car even close to my price range is too high @ £280 a month for a second hand car, same age as my current one (2017) which I don’t feel comfortable with knowing the issues I’ve already had with the current one. I’ve been told if I add some money towards deposit I can get a better deal, but I’m not in a position to do that currently. So I’m now stuck with a car I’m paying £160 a month for but not getting any use out of. Does anyone know what options are potentially available to me? Would car finance company (Nissan finance) take it back? Could I claim a new gearbox from insurance and then give the car back? I’m now at a place where I’d happily give the car back because honestly it’s too much headache and I no longer have any desire to deal with it. Not sure if this useful information but yes I have gap insurance, I’ve been asked this a few times. Any suggestions are welcome. Thank you in advance ❣️