If trading is 70% controlling your emotions and 30% good planning, why is AI so bad at it?

Most tutorials I've watched talk about having a plan and sticking to it, and that sticking to it might be difficult if you don't have your emotions in check/under control/ able to be turned off and remain rigidly committed to the plan.

Since AI is supposed to be good at pattern recognition, this seems like it should be an ideal field for AI to excel at - and without the emotion of human responses.

But I've tried a number of different AI bots available in my exchange and all of them do nothing except lose money. It strikes me as a little odd because it should be very easy to create an API to follow the "regular" trading rules, and AI should be better at it since it has the advantage of context as well.

So is there any reason it seems to do so badly? Other than simply the same thing as always, bad humans programming it improperly? Heh