Market is struggling right now. Not sure if any coin can double your money in just 14 days?
Seems quite difficult. Because market is in red now. Yes you can double your money in cryptos but 2 weeks are very short period of time. Invest in promising coins and hold for few months only then you can get your desried returns.
If getting lucky choosing right coin and acquire 10% a day can make it possible, but like what many say's the market is so volatile and it's very difficult
to achieved even small percentage of earnings, just keep trying to deep research about coins that have good updates and see if there's a good movements so you will be able to gained that particular profits that you need, always remember that trading is also accompanied by risk you need to learn how to handle that as well.