My experience was when I was just studying and didn't know anything about understanding trading here in the business industry. What I experienced was that I made money in 2017 in cryptocurrency because I joined the ICO, and the rewards that were paid to us were the project's token itself. When it was listed on the exchange, its value increased a little before dumping, so I immediately sold it, so I got a profit that could be considered huge at that time.
That is a great story, from those, which inspire a lot of people to get acquainted with crypto field. However, it is hardly could be called trading, I guess. it was not systematic activity, it was more about luck, than analysis, that is why it is nearly impossible to repeat such case even one more time, not to say more than one. From my point of view trading is something you can more or less predict, count, it is nor gambling, it is more mathematical and statistical.