Buy coins at a low price when the market falls. Fall prices in the minimum will not always be. All the same, the market will begin to recover and, accordingly, prices will begin to rise. And due to this you will be able to increase your profits.
As an option, when prices in the market fall - buy, and when they grow - sell. And make money on this.
Actually is more difficult rather just make money from bullish market but its not meaning that we can not make money in cryptocurrency in this condition. At this play quick buy and sell can bring profit. If only holder for long term, at this point is not working so good.