Trading bots have always sounded like a good idea especially for people that don't know much about trading or want decent profit. Even though it sounds like a good idea, I rarely see people use it much or hype it up especially the good traders.
You are probably not aware of this but bots are not supposed to increase your profitability as a trader they are to automate the process for you and they work according to the settings you set for them, they don't do things themselves because they are bots, they need instructions to work. A bot will buy or sell certain assets with specific amounts and all these metrics are set by its users. So if you are using a trading bot, you set everything up, and then you run it, and it will process the things when you are not available which makes it possible for you to make certain trading moves even if you are busy yourself.
I'm not a big fan of bots, honestly. I do find them useful in some instances such as in times when a new token or coin is getting listed, a bot can execute trades faster than a human, so it can be useful in making an entry and exit very quickly and giving you some profits in the initial pump-and-dump sessions of newly listed cryptocurrencies in centralized exchanges.