You have to fully understand the market so you'll get used to it.
This is not a typical of investment where its stable and we can predict it easily, this is very unpredictable and always believe that this market is manipulated that is why sometimes it goes sideways and sometimes we witnessed a significant drop or increase, that's how volatile it is and instead of complaining, why not try to study the market very well so we can learn and make a good decision next time.
True, everyday in fact every moment is a learning curve for us wherein we being in this domain for long time knows that the market does not go as per predictions and everyone has a different opinion about the market situation and make their own move based on their strategy. We cannot be frustrated with the market situation rather studying the market will help us in further moves as you have rightly mentioned.
I think the reason why people who got easily sick with the market invested in bitcoin thinking that it provides easy money in a short period of time without really understanding the bitcoin market fully. Well, it is true that bitcoin is a good source of income but that is if the market is in the bullish times but always remember that the market is not always bullish sometimes it becomes bearish for months before becoming bullish again. Bitcoin is not the same as those ponzi scheme where they promises bog returns in a short time, for you to survive in the bitcoin industry you have to understand how the market really works and also ready for all the risk it has with it.