You are right to hold some skepticism around trading bots, the truth is that bots can be very effective but there is a catch, if you do not know how to trade manually then there is little hope that you will make any money even with a trading bot, you need to know how to trade because if you do not then it is going to be impossible for you to actually know if the strategy that the bot is using is profitable or not, so if you were to code a bad strategy into the bot the only thing it will do is to lose money for you at an alarming speed.
That's what I always say to my friends who consider using trading bots, if they don't have any experience trading or they don't know how to do a trade themselves that generates profit then how will they generate that profit in a bot that only follows your instructions, a bot will only be as good as it's owner and the specifications that that person has added to the bot.
And that is the best case scenario, a bot can only be as good as yourself if you can put into code every single aspect of your strategy including your ability to improvise on the fly, and if this is not possible for you due to your inability to put that into the code or because you are not that good at coding then your bot will always be inferior than you, which means the only way for a bot to be profitable is that you are so good at trading that even an inferior version of yourself can make profits in the market, something incredibly difficult to do.
Bots are created by human and of course they are inferior when it comes to decision making yet they had been created on following a specific command.It doesnt really need for you to have that coding
skills but at least you should make yourself aware on how things should be done and speaking on editing bot commands then it a must thing for you to at least on how to read it up and
made out some changes according to your preference.
Bots are for automation but most people do have those wrong impressions that these things could guaranteed profits which is really a very wrong mindset to have.