there are various way in can grow his coin there are different option to choices if decide to grow your coin by trading that is one of the best way to grow your bitcoin and you can also grow your bitcoin by gambling but what is there is that you can also loss it very fast because it not a very sure way to grow your coin.
Yeah you are right that there is many way to grow up your bitcoin like trading or other online tasks and i think trading is much more the best way to grow up your bitcoin than gambling because gambling is very much risky there is a lot of people lost their bitcoin in gambling.
If Op try to make
BTC2 weekly, even trading is not enough to achieve that goal and gambling too risky to lose all of his funds instead make it grows. Seriously, how much we're here earning bitcoin that much in 2 weeks? I think just they who have mining farms/exchanges/big gambling sites who can make it happen.