There's no other than you would be needed up to blame but only yourself on which you cant blame the casino that they are deceiving or hypnotizing you on which this isnt really that right that you will be pointing out your fingers because you are the ones who have decided to play and you arent that forced on making up some deposit for you to play. It isnt really that just that right that you would really be thinking up this way. Therefore, when you do play up gambling then you should be that sensible on whatever the actions that you are taking and thats why its important that you do really know at least on the things that you are really that doing.
The casino is usually the last one to blame, if we want to be honest to ourselves. No one is forcing us to deposit, nor to place the bets. Unfortunately, the concept of gambling and the games themselves are addicting, there's no denying that, we've all fallen a victim of their tactics some way or another. This isn't an excuse though, but as I said, I'm quite confident that we've all have experienced what the OP described.
You should have stopped, but didn't, thinking what's the harm in playing one more spin? You lose once, you decide to go for one more round, thinking that this one should recoup the previous losses, however, it doesn't. You gradually enter a vicious cycle and if you don't pull yourself together, then you'll eventually lose everything in the process.