Dumb method that everyone knows about. It is called martingale, and won't work in the long run. You will be killed in the long run eventually. Eventually you will bust, risking thousands of coins just to win back your losses from a long streak and 1 coin. And that is assuming the bot actually works, and doesn't steal your account/coins/e.t.c. It might work for now, but eventually, you will lose playing your -EV game. I suggest you only gamble what you can afford to lose, and to quit while your ahead. Always better to walk out with some profit than lose it all.
It always amazes me how stupid people can be they don't even bother to look at the maths behind it. You sum it up very well.