I think first mistake is for newbie they don't research about trade they think when price down they sell coin but that's not good for trader
Many people really think that crypto trading is something that is very easy. This is not true. These guys should learn much about this difficult business before they start it.
Not everyone think like that. Majority of the people in my country stay away from investing in crypto calling it a scam technology that has cost many people their entire savings. Even the government does not allow them to invest in such businesses.
No doubt it is not an easy job to earn money in crypto. Even researching and deciding to invest in an asset requires so much effort that many people give up mid way.