but the Roobet crash is only game I have managed to catch 7000x once.
It is so lucky of you. It is very seldom to catch that high multiplier unless you set your rolls in auto hoping to catch a random very high multiplier result. I wonder how much you wagered on that one and how long it is for you to catch such a high reward. I had been playing crash for so long and the most winnings I got is only 1000 multiplier.
It's absolutely insane, but how dare any gamblers to risk their money to keep tracking until 7000x? Only min bet or what you afford to lose apply this rule.
I perform only reasonable amount when i'm playing crash and set auto cash out as 2x. I'm happy with that.