Does anyone have knowledge about Forex online currency trading?

Hello guys,
I have the idea about do trade money online. via trading platforms like forex trading or Olymp trade.
So if anyone Presently does currency trading. Please share your own experience with me.
and how do you face the risk when you trade.
It’s possible for Sri Lanka?

I have a lot of doubts like this. so is anyone has interested in this conversation? please share your thoughts.