for example i trade with 500$ after some days that particular coin raise up my 500$ turn to 600$ i can use 400$ to invest and use the other for home purposes but i think it can work if only the coin have a good value but when the coin worth nothing your 500$ might come down to 200$ that's the risk in trading sso please is this decision of mine good or bad?
It is the possible thing in trading, you can turn $500 to $600 within a split minutes.
But there's also some chances that it can drop lower than your said price and it mostly happens to the coins that aren't really so popular.