But it was when the market was good.
In this bear market, they're struggling very hard to survive.
So I think the best way to invest is this :
Have a side job, cut down your expenses, then invest 10-20% of your monthly income in the market.This way you never have to worry about gain and loss and surely you have higher chance of getting rich because the market will recover in the long run!
Trading can be very difficult, besides the risk, you also have to pay fees to the exchange on every order or to the network when cashing out. Even professional traders can have difficult in a bear market, sometimes it's more advantageous to retreat and to wait the market react to start dealing again.