Bitcoin's price reduction does make a lot of people lose. But with the pump going on Bitcoin in a few months it has made a positive impact. You should be able to trade well. Bitcoin does price have to go back down because we can buy it again at a low price. And certainly the price of Bitcoin will also be back pumping and at that time we can sell it again.
Well, that is how crypto currencies work. The price dumps, the profit does too, the price pumps, the profit does too. It is not that hard to earn money but as an investor, you should be really patient since with the volatility of bitcoin, your investment is at risk. Even if bitcoin goes down, there are a lot of altcoins that can give you profit, don't stick with one.