It's stupid to buy when the price have been increasing for weeks, it indicates that the crash is coming soon. But with gambling in casinos you have absolutely no way to predict your outcome, the only thing you know is that odds are against you, because of house edge. If you want to gamble, the best you can do is play poker or bet on sports or other things.
sometimes the price keep increasing instead crashed ,
noone knows , and its like gambling if you keep buying and did not know what you are doing ,
so its really depends on what you want and what skills you have.
No one knows what will be the future price of Bitcoin, so it might have sense to buy it even if its price is increasing and it is also logical if you think that it might crash after these increase, but it is your money so the call is yours. About gambling, it will be better if you play with skill based gambling game because if you have the skill you will more likely win.