trading as no guarantee if you invest money by thinking then you will definitely lose , we should invest money by analyzing and by calculating risks if you think that markets will go even low who know this might be the bottom and you will risk your investments
in trading profit and loss it is a risk. if we are afraid of risk then do not trade, but we can find ways to minimize the risk of loss, one of which we can make observations and do some simulations, because if we can master the bitcoin price movements then our chances of losing can not occur.
second, don't risk too much money because we never know that it will happen at a price in the future, if we are not so sure we can use a little money.