What are the best AI trading bots for crypto?

I am looking for AI trading bots but I want to do some research before I try one. Do share any experiences or link to educational articles for a noob like me. I have heard a lot about that it is a fantasy and they don't work. But I did see one of my friends accounts and since then I think my life is shit. He did say go for long term trading bots and not the short term ones. Just want to hear what professionals like you have to say on this.