I'm sorry I don't understand your logic.
You're a 20-year-old adult, you must be able to understand the damage and risks you are currently taking with your health and life?
I don't see how you taking responsibility for your condition and getting well is going to put pressure on your family. How much pressure would losing a daughter to diabetic complications at a young age put on them?
If you meter is reading HI and you have symptoms of DKA, the best thing you can do is to go to A&E. They'll stabilise your BG and get your blood profile back to normal quicker than you battling along by yourself.
As previously stated it will also likely get you a referral to a consultant and a clinic a lot sooner.
If you're struggling with the basics, which it sounds like you are. Having the support of a consultant and decent diabetic specialist nurse will be invaluable.
You're on MDI I assume? Or meant to be? What insulins are you on? Are you meant to be on basal bolus regime?
Diet wise? Why you're drinking bottles of Lucozade when you're blood sugar is off the charts is beyond me. I'd limit carbs, drink plenty of water, take electrolyte powders and keep correcting until your sugar is down to the single digits. Much safer to do this via medical professional in a hospital.
Short-term advice is: GET TO A&E.
Long term: Engage with your medical team, do a DAFNE course if possible. Learn about basal-bolus, test when you wake up, before every meal, two hours after, before bed etc. Learn about I:C ratios, carb counting. Get your basal rate sorted.