On rare occasions, when I was trading. It is an unpredictable market, as they say. But over time you learn how to make better movements. It is important to be always up to date with the news and development of the crypto projects.
Its not a rare occasion since in doing trading we normally experience this kind of thing because we can predict the market price on any time basis. Mistakes at first are just normal because we learn from it so that in the next move we know already what to do, even the market price is volatile we could lessen the risk if we got already the trading pattern and things that must be considered. Lossing bitcoin in trading is not a rare thing.