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?
My advice, do not invest in crypto currency money that you feel sorry for losing or that you will need. You can turn 500 dollars into 200 for a few months. And in half a year they can become 1000. Everything depends on your ability to wait and good luck in choosing a target for investment.