I made a new calculator, but do not have a host, so I saved the files to google drive.
Tell the calculator how much you lost and what your profit target is and it will show you how much to bet on each of the spots, then you can decide which spot to bet on.
I can't insert a link to google drive, but message me if you want it.
Next Bet Calculator.png
Next Bet Roulette Calculator
loothog.com/nextbet/