actually it is not difficult to get a profit, but many people always feel that they are not quite satisfied with small profits, and want large profits so that while waiting for it to rise further and it turns out the price is falling or cheaper. so they should have gotten a little profit but because they wanted to be bigger, in the end they didn't get anything.
Taking advantage of trades is not as easy as you think if the trader doesn't understand the market. There are many thing that make it difficult for trader to take advantage of the market as it has been repeatedly mentioned. So without knowledge, experience, analysis, it will be difficult to produce something like the target you want. It is possible to want bigger profit, but you really need to have expertise in doing fundamental and technical analysis.