The experiences that have occurred can be used as learning in the future so that they can be even better. Do the best you can in managing your Bitcoins for getting the profit. Half of the Bitcoins you own can earn big profits if you can manage them well, therefore skills and experience are very much needed to do the best in investing and trading. Losing or winning is normal but if you experience losing continuously then that is not a good thing too and there is something wrong with the strategy you are using. That's where skills and experience are important in creating new strategies to follow the crypto market.
I think everything you say is true, but you also have to take into account the level of conviction of the person who owns BTC so that they use it wisely, not everyone knows that you can diversify 'in order to obtain benefits when the market possibly enter a possible fall, like what is happening now, in fact one of the books that are very interesting in the stock market called "A Random Walk on Wall Street" explains that the best way to always have money is to diversify and here in crypto it is the best option, it does not matter that it is not in BTC, there are other investments such as Real Estate, Gold, among others.