Yes there is no safe way to grow bitcoins at a moment and those who promises you to give best returns in quick time will surely cheat you and scam you in long run which will bring loss for you.
Yes in cyberworld in order to get you need to the principles of some growing bitcoins like investment, trading and gambling. In investment it will scam in the long run so invest as early as it does to be able to get profit. In trading you need to know the principles of trading buy low and sell high only just to be ckear to you. And gambling you need luck in order win or else you lost.