It's a stupid and dangerous strategy. In fact the entire gambling thing is very risky especially these casino games. That is why I go more with sports betting.
Instance i risk a thousand of dollar for only gain 1$ profit, better i trading with 10$ on shitcoin and try more than 10% with a short term.
Martingale system it's for a longer gamble but its not really good, for me doing a gamble online with a long play was not really recommended. Because it's just a time you will get a streak lose/bot from the casino online aim your account.
I really like a gamble with feeling, went you really feel you gonna win/hit at gamble will try bet some medium-high amount. If i hit that, i will stop play and withdraw the money.
The reason, why so many people got lose on gamble online because they gamble with a long period like 2-5 hours. It's not really good, at begining i believe you will gain profit but because you really play with a long period make you feel addicted and the streek lose coming to you make your profit lose with a few mins.