Your total bankroll must be $ 32,767 to able cover 14 streak losses in a row with $1 as base bet.
Only high rollers can survive against the house and for a shrimp like me only low stakes for a martingale strategy. But I think if that happens and you recover that huge amount during a losing streak it's more like a phewwww scenario, glad you get it back. I don't know if there are really martingale gamblers that been successful in this kind, I think none if there is/are maybe they won it for a few rounds and not for long.
But we realize that maybe the streak will not happen with over 10x enough for me 3-4x defeats and we have to know how to crash play while still not playing rockets too high it makes the heart pound.
When I do crash game I always tend to do it manually and with not that much of a multiplier kinda on the safe side as always.