I think it is better to invest, if we invest so we can get a bigger profit of up to 100% in a short time, remember to save money will not make money being a lot but its value will continue to fall.
There is a risk in investing and you cannot guarantee to have 100% growth of your investment in just a short period of time, unless you are genius.
Sometimes it takes month or years depending on what you invest, aside from being smart, you also need to be lucky to fast track your success.