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.
This is really a cool thing to say but still the reality is not the same as you said , here I am still a useless student and of age 18 or 19 near , but making earnings only with the Bitcoin , since my parents don't know about Bitcoin but still they are not giving me any penny amount of money , I mean to say pocket money . So how we can live our life with the no money and only investment in the Bitcoin .
So here my thinking in the Bitcoin is that make earnings and enjoy life fully .
But always save 10% of your earnings in the Bitcoin and this will grow into thousands of the times after 10 years .
And also I am doing the same , because I can deposit external investment. In Bitcoin because I have no other sources of earnings .