Everyone who enters in gambling knows the chances (most sites informs you the precise percentage), so, particularly, it's pretty much wrong to cry for a loss in cards, dices or slots... I think poker has the best chance to score because it's a question of skill and technique. I think dice and slots could be intentionaly not fair and sure losses will come.
I partially agree with you.There could be a possibility of sites manipulating data at the back-end BUT when you can verify the data with the secret hashes,what could go wrong ? Matter of luck completely!You say poker is skill based,are you sure the cards are drawn at random and not pre configured how they should be divided amongst the players vs the computer?You can't help is.The most you can do is controlling your gambling habits and make sure you only bet what you can afford to lose.Sports betting is less riskyBefore putting your money out on random sites,taking their reputation into consideration from legitimate sources is an advantage.