Where did you get this information that an investor gets 0.6% monthly? This is some kind of nonsense. Today, no one gets less than 15-20% per annum. In my country, even a bank deposit gives about 21% per year of the deposit. Now imagine that other assets give it. Therefore, you wrote complete nonsense that does not fit with reality. You should study this issue in more detail.
Pretty sure the economy in your country are fucked up because banks want to gives 21% APY.
Usually banks only offer around 3%-4%, even worst they only offer 1% if the inflation rate is low. Although I didn't find the information, I think 0.6% monthly is make sense, investment in most of countries usually offer such amount.
Even though your banks can gives high interest, better to invest in global assets.