A casino offer states a percentage and a multiplier. Neither tells you what the offer costs, and the arithmetic that does is tedious enough that almost nobody does it. These do it for you, on any offer rather than only the ones listed here.
You will not find lucky number pickers, betting-system simulators or strategy generators here. No sequence of bets changes the house edge, so a tool built to find one would be selling something this site spends its learn section explaining does not exist.