There are many free trusted bots such as seuntji bots and mydicebot, it does not cost you anything to use them. You can even create your own bots if you have the skills, so I have no idea which bots that cost you some money to use them. Bots has nothing to do with winning or losing, it is all about extra features where you cant find in the casino. I'm not surprised why there are people who like to use bots, because they like it for some reasons mostly because of its extra feature and speed.
These are great projects, I tried the seuntji bot and I like that there you can simulate strategies without even playing. But I have never seen anything like it for betting. Maybe you know some external programs that allow you to automate the betting process for a particular bookmaker? I would try such a program because I don’t have the opportunity to sit at the computer 24 hours and follow the changes in the odds, and if we are talking about live bets, they change so quickly that you can’t have time to think and place a bet. Therefore, it would be convenient to first think over your strategy and then set up the bot to execute it.