In general, no one recommends the use of bot software.
What is the logic of the running bot software? Can we add our own trading algorithms to these software?
It's not really that hard to understand , the bot simply makes thing automatic without the need of you doing anything. If you don't know anything about trading or how It works then It's not a good idea to buy one or use it.
Algorithms are actually made by the creator of the software and paid bots logically have closed source codes so without the source code Its impossible to add anything .
Correct,buying the bot without proper knowledge on how to use it is really useless at all and you are just wasting on your money and you are right bots are made just to make your trade excecutions would be already automatic without the need of your presence thats why you should know how to use it,