Personally, I don't use any trading bot in my experience but I heard about it. I have seen it on exchange. I have some LEDU token which I can't sell from the last few months. I placed sell order successfully but I noticed there has no buy order maximum time but trading is going on. I surprised then I realized that there has a Trading bot which is doing it. But I am still using traditional way for trading as I don't have enough knowledge about trading bot.