i think if you invest your bitcoins in gambling you can really grow your bitcoins.
but i think if you have no experience of gambling and having no skill then you should be ware of gambling, and try some other places to invest your money, because investment in gambling is too much risky and specially if you have no experience of gambling.
In certain games like poker you can increase the chances of winning with experience, but in general, there is no experience and skills involved when it comes to gambling.
Luck is and will always be the main factor that you depend on when it comes to gambling.
Either way, gambling is never a good way to increase your Bitcoin holdings, because as much as you can win, you can also lose all and end up with nothing.