There are already tons of threads that talks about trading bots and a single search query can show them all, and this had been answered for many users. It is simple, trading bots are fine if you want to have a safe trading whilst having some things to do, but not that preferable if a trader wants to generate real profit. Some people think that using bots is like making a passive profit. Not all strategies are applicable in all times specially with the market's volatility. That's just it.
There are tons of bots that is trusted by many users in this forum and my particular suggestion is GunBot.