To do that we need knowledge, experience, and a little luck. In fact, no one can guess 100% accurate but if you have your own technique, reasonable entry and exit times, I believe it is still possible to make a profit this way.
But we can still take the profit although the profit is not too big because as long as we can see the green candle at the market, we can close the trade by taking the profit. Don't be too greedy to chase the bigger profit if we cannot do that because that can lead us to feel the loss in trading. It is enough if we can make a profit because not all traders can make a profit, so we need to grateful when we can do that.