That is the great thing about this. A market coming down means that the trading algorithm is able to pick up those coins for cheap and then resell for profit when the market corrects again.

As I've said previously, I approach every situation with skepticism, especially in the world of crypto. Only way to find out if it works is to try it yourself. Its trustless. The bot isn't able to withdraw your funds. You still have complete control over your account, API, keys, funds, etc.