I talked for some time with algo traders who actively trade through robots and came to the conclusion that the most efficient bot is the one that is written with your own hand for a specific strategy based on statistics or a robot written by some programmer to order, for your strategy. All robots that are purchasable off-the-shelf solutions will not bring long-term success, especially robots that are trying to sell online for a small amount.
Which actually is the whole point of bots that many people do not realize.
Bot is not to magically create strategies for you. That job is your job, to find the strategy that works for your level of time, bankroll and risk,,, bot is simply there to automate those strategies and let you sleep and do other things instead of staring at the screen the whole day
But I guess people think of bots as 'tricks' to earn.