Most of the time I play Blackjack & Dice. I have always noticed that when I bet a large amount I am a loser when it comes to Dice. Also in case of Blackjack when I bet big amount I get wrong card due to which I lose the bet. On the other hand when I bet small amount I win in case of Dice and if I bet small amount multiple times I win multiple times.
This does not make any casino a cheater because you can check its fairness as long as it made available to you by the casino you're playing, if that is the case then do not bet a big amount of money just increase your bet when you are in winning bets, it will take 100 of bets for you to prove your assumption and play on at least 10 casinos.
In Blackjack, when I bet small amounts, I am always get good cards and win the bets. Thus the cycle continues. I have noticed that it is not an easy thing to withdraw from having achieved something great. I always gamble for fun with small amounts and lose them but I don't care. But I started playing blackjack yesterday with $1k and noticed that the casino sites are somehow cheating us. I lost my $1k yesterday. through Blackjack. What do you think about casino site algorithms? Are they cheating with us?
You did not mention the name of the casino so they can address your concern or assumption but why are playing in a casino where you cannot verify its fairness, maybe you need to take time and come back a week later and check if you're still getting the same results on that casino or check other casinos, other gamblers are lucky on one casino over the other, if you're not sure of the casino you're playing then go on other casinos.