Some notable trading bots, such as the
Gunbot, encourage their users to try manual trading alongside the bot and suggest that the algorithms the bot uses are applicable to manual trading as well.
A lot of the time, these bots are trading between Bitcoin and altcoins,
not between Bitcoin and fiat. This means that even in a bear market, the fluctuations of different cryptocurrencies against each other can vary significantly. With the help of manual trading, these bots can be managed in bear markets.
3) In a bull market every bot can make money.
These bots tend to profit off short-term fluctuations rather than buying and holding long-term, so it's common for bots to lose money in bull markets as well as bear markets.
A combination of trading bots and manual trading can be fairly effective depending on your strategy.