I have been reading about exchanging sites. all of them have people who lost their money due to hacks, or investors got their accounts closed, frozen (Coindesk) without proper explanations, usually exchange sites let them deposit money, but they don't let them withdraw their money.
Kraken(some review sites list this is as one of the best exchange site, what a joke) is also a shit hole, the same thing, money and coins missing, buggy laggy website, no customer support.
How do you make money of cryptocurrency when the exchange sites are predators to hunt people's money? Decentralized trade sites maybe? If I read positive reviews about these centralized exchange sites , they doesn't seem genuine at all, most of the time, it looks like someone ordered them from Fiverr. Binance, Bitfinex with the Tether fiasco, Coinmama.... All of them looks like scummy attempt to get your money.
First of trading is not an easy game to play you can profit but can also lose money. Exchanges get hacked you got to live in this reality and thus should trade portions on exchanges, at least this is what I do to minimize my risks. Many people simply go there and buy some altcoin and hold it than simply trading and trying to make a profit out of markets volatility, because it is easier and if you choose the right one you could look at profits like 5x and way more, this is why ICOs are somewhat popular nowadays.
But because many people hear the stories of people becoming millionaires they think it is easy, it was hard to buy back few years like 5+ and simply wait for bitcoin to hit higher and higher as most of the people sold or lost their coins since they haven't cared much about how will it will be worth in the future. It is not easy to flip money on exchanges but not impossible if you know how to look at price movements and notice pumps that are happening like everyday.
Other ways to earn would be betting, casinos (I mean exchanges and buying coins is somewhat a gamble and exchanges are casinos). Offer your skills for crypto etc.