Choose a profit target, let's say 1.5x - 5x, basically for me, I target nothing less than 2x - 5x profit target, and this is base on the strategy and the platform that I use, different platform varies with their crash Elevator games but study what works in the platform that you use.
The part where a gambler has to use just a small percentage of their money is a good strategy but in the aspect of targeting 1.5x - 5x profit is what I even don't archive most of the time because immediately the game starts, it can just crash even before getting to 2x. I played crash last week and I didn't make any profit from it.
There are people who hardly make profit from crash game, I did play but ended up having 4x which I later wasted it back to the casino without even left with any money, the goal was to accumulate the winning to something huge before requesting for a withdrawal without knowing that it would go on the reverse. Usually crash good is actually cool game but it's too fast in a way you can predict the next flight minutes to know when to crash.