The problem is not only luck. But often the problem is in your character. Not everyone is able to wait or make decisions quickly. In addition, trading is quite a nervous activity.
Trading is not all about luck but we will have to true our skills too. In trading, I have seen so many people who lose hope just because they feel unlucky in trading and they stop trading so better believe your skills and keep trading so I am not asking you to chase your losses or lose hope but keep trading with your own new strategies and increased your knowledge as much as you can.
Do not be easily discouraged if you keep on committing losses as everyone here has experienced that too. Trading is a long process of learning and there is no shortcut about it. Mistakes are part of trading so it should still be faced positively because it will be the best motivation we have for us to improve our skills and strategies in trading. If you are not happy with the results of short term trading, try also the long term one. It is less risky and you still have more chances to earn profits from holding bitcoin for a long period and sell it when the price is already in peak.