Namaste, OP.
You've been trading since 2017? You must have been through a lot of bearish market after that year especially that I can still remember when Bitcoin plummeted that year around 4k-5k and it was like a memorable experience for me in the bearish market. Curious to what you mean by forex "rollercoaster". Did you mean by these so called "volatile market"?
I am quite confused to what you meant by you earned fortune but still lost everything? Since you are also asking for trading knowledge, you might as well move this topic to Trading Discussion section.

I wish you still the best at the end, OP.