Are you interested to buy one? The good ones are not for sale. I have tried many over the years and never came across any EA which are consistently profitably + suited my risk profile. In the end I sat down and made my own. I think this is the best way because then you will understand the EA fully and you will be able to work with it and further improve it.
Doesn’t exist. Like others mentioned, you need to custom build from scratch, based on your own trial and error. Invest time, be patient, and have a back up plan if you don’t find gold.