There is no skill being tested in these gambling games in which the price of Bitcoin an other assets are supposed to be guessed in the very short time, because casinos use extremely large leverage, meaning that it only takes a little movement contrary to the prediction set by the gambler for all their wager to be pretty much gone and the session be over, there is no skill involved in that is just a coin toss and hoping for the best.
If one wished to actually try to trade with less risk and with a limite leverage then one is supposed to sign up to Binance or other actually reliable exchange services, when one has the power to adjust the level of risk one feels comfortable with.
Price prediction on casinos will be always considered to be gambling, when one compares them with the spot market for future markets with a reasonable level of leverage.
Still, being gambling it does not mean it cannot be fun to those who are seeking to have an extra injection of thrill and adrenaline while watching the price chart of bitcoin on live, while having a leveraged stake on it...