We can potentially lose our money if we don't know what we trade and why we're trading. The risk will be with any of the chosen field we do, trading or investing/hodling.
Whether you've got a huge capital as you trade or invest, it can potentially go to zero if you're reckless and just trades with your emotion.
You would really be needing risk management and making it as a default thing as this is the main factor on where you do really need and the most important.
As a trader then earning profits or money on this market is hard but could really be possible if you do know on what you are doing.