When analyzing Bitcoin, for example, you have soo much more data to watch than with forex.
It is not about data, it is about how good a trader is. Their are some people that left trading crypto and said trading is gambling. Some people little but yet losing. Some people are making profit both in forex and crypto trading. I even have a brother that has been in forex for years, he knows about crypto some years ago and stated to know about crypto trading like a year or two years ago, but prefere forex. As for me I prefer crypto. Sometimes it depends on preference and the one you know indepth. But about data or whatever, forex also has it which is also a means to be a better trader is you are following up.