I think the more longer you go with martingale , there is a big chance that you will lose big money.
In fact there is the same probability of starting killing strike that will wipe out your wallet with every single bet. Every single bet (no matter if first or millionth) can be first bet in killing strike.
I have 2 threads that reveals martingale and 7 variations of martingale.
Martingale is system that lowers your probability of winning. There is no need to talk about it/ collect data. Just realize that it is a loosing strategy and forget about it.