I can't believe the amount of losing punters desperately trying to make new maths: 2+2 = 5 by 'special pleading' that old loss chasing fogy, progressive staking [a mathematical impossibility].
There is only one progressive staking method that works. Progressive staking after a win only if your can win at level stakes [never after a loss]. A progression after a loss will magnify your wins but will also magnify your losses and anyone contemplating progression staking has too many of those. Tilt.

Google to 'Dr. Maths' or any other of the maths sites and progressive staking is all doom and gloom. Maths, unlike stats cannot be manipulated. It's a hard task master of reality and it will shove 'special pleading' or 'strawman'
arguments right up your......if your silly enough to let it.