Forget about everything else and just put everything on bitcoin. You are living with your parents, they pay everything for you, you got nothing to lose. If I was living with my parents, I would save everything and buy bitcoin monthly. If BTC doesn't keep rising you can still reach the 21 BTC holder group, then save this and retire in 10 years when the price makes you a millionaire.
Go all in on regret later. You are on a privileged position to profit from high risk high reward moves. No risk no win, and BTC is the best long term high risk bet.
I know it is good idea! I am still young and I know that I have a opportunity to become a rich person someday because of the bitcoin. Many people are now became millionaire because they hold their bitcoins. I will also hold my bitcoins for me to become a rich person someday.