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 bitcoin is doing great and has achieved high amounts of success since it had started. It has made many people rich because its not regulated by any government and is not stable because of which its prices fluctuate and there is a high chance of prices going up. So the more you put in it there is more chances you will get back more in return. But I still dont approve putting all in bitcoin because of the same reason that its not stable so there is a very high risk of price dropping too and can cause a great loss.