It's you that's on the system not a piece of paper that can be thrown away. Advice, don't overstay. All you can do now is apply for a visa that is LONG ENOUGH for you to stay and then have a flight booked leaving before the date you are meant to leave. There's companies like kiwi that allow you to pay more and get a refund minus £10-£15 admin fee. That being said, don't overstay again 🤣 waste of money, it's cheaper to do a visa run and also more respectful.
Just Google it 😂 these pages get so rammed up with silly questions you should be looking up in Google and the immigration sites. Your own government website for your country will even have the information on 😂