When you win other people lose and when you lose others win, but the thing is that the percentage of those that lose are higher than those that make profit, so this little analysis here tells you that the casino is always in Profit. There have been cases where bookmakers lose a lot of money due to the fact that a lot of people won from sports betting, this happens once in a while, if I remember correctly 22 bet couldn't pay all their users few years back this was because a lot of people won from sports betting, this isn't something that can happen with casinos because they are always in control of the game.
It seems Op is trying casino games with the possibility of a new account that has a greater chance of winning than an old account that may have won several times.
You are right, that the casino will still get a bigger win. and some reasonable wins are given to users but the comparison will still be more losers. so the casino will still make a profit.
What Op did may have the potential to use multiple accounts which most casinos will prohibit. Op realized that because he tried a new account and got a better chance of winning.
There's no solid proof to this or something i could say that it is really just that pure coincidence in all the things that do happen. Somehow we cant be able to make sure if there would really be no
possible rigging up about winning chance specially into those new accounts just for it to make it look that making money with gambling on playing in the site would look easy.
We do know that once a certain gambler would really be having that kind of initial impressions then this is where time that greed would easily kick in. On the moment that they are already
chasing up their loses after some win then this is really something that effective. Just like been said earlier that there's no solid proof into this one, if this one really happens
then pretty sure that would really be tainting out some sites reputation if ever this one would be proven out. People would really be just that only good on speculating on things about those
possible scenarios or probabilities which might actually be happening.