Trading in a falling market is dangerous. To earn in this market requires a certain amount of experience and luck.
I've never tried it, but it seems like it's very difficult. because most people when the market is down, they hold the coins they have. well, some people also take advantage of this moment to buy their favorite coins.
not difficult, but it's profitable because you will get at a cheap price, even currently most altcoin falls under 70-90%, so you will still profit for the long term because later, in the end, all will be back on the rise.