I'm not saying this is the case for every casino, all I'm saying is that, I've been gambling for quite some number of years and with my experience in gambling, I can be able to smell or fish out a foul play when I see one, and I can confidently say that some of these casinos do manipulate the outcomes of some of their virtual or crash games, even slot games too.
It may not be manipulated by the house but there is house edge so to speak. So in the long run, the house will win. To chase such edge, you can easily end up bankrupt with your funds. So if we say, you are playing luck-based games such as crash or slots, don't think that you will have your edge over the casino because winning in these games requires luck and good amount of bankroll.