Yes! Each trader has different trading goals and accordingly different requirements are there in order to achieve those goals. So, it's highly recommended to formulate your own trading strategy based on your trading needs rather than copying other traders' strategies.
Forex trading is all about getting the right forex education, ignoring the myths and focusing on the right information.
You need to build a system you can have confidence in which will give you the discipline to trade for long term success through inevitable losing periods.
There can be multiple raesons to why traders fail. It can be because of overtarding or poor risk management or unrealsitic expectations or it can happen because of not having a properly backtested sound strategy.