It's true, Most people tend to dive head first without knowing much about where they are heading. Why? Because they see people earning 200% on a trade and they think that they can also do that. But no, You need experience when it comes in trading. Experience defines who and what are you in the market. So take your time, Don't be greedy. You will have that 200% someday, Just wait.
Not necessary. There can be a lot of factors. Trading is a very seductive thing, even if you are well aware of all the dangers that an ordinary trader faces.
As a newcomer, you will often overestimate your strengths and make transactions ignoring money management and risk management, in full confidence that you understand how the market works.
But the market is too unpredictable to succumb to such gambling impulses, this will often lead to losses.