In terms of risk, what you need to understand is that there's no different between them both. I love to play crash and I have also play other slot games like plinko and there's no difference in there winning and losing streak. Both games or aspects of gambling is just same because you are relying on luck to win and not skill or strategy. You can not determine the outcome of your stake.
There is actually no difference when it comes to their wining rate or losing strike. Both casino games are build with higher wining difficulty so the casino would be on the wining side. There is no glitch in any casino games that let's you win always if there is the development team would work on it ASAP however all casino games is built on a random result generation so it's obvious you'll need luck to win from any casino game, be it slot or crash games all are dependent on luck and as experienced gamblers you have to stake only what you can afford to loss.