In the first place, why have that mindset to be beat the house? Does we really need to aim for it.
It's already clear to us, even newbies, that there's no way to beat the house in terms of technical aspects like if it's possible to ride on its algorithm, manipulate the result and override its built system.
Instead of thinking about beating the house, learn to take advantage once luck hits us and give us decent win. Winning big doesn't happen often in playing slots so learn to cashout some winning money if ever it's now our turned to hit it.
I cannot help but agree with you on this, it's not the right mindset to have about gambling since we know that casinos have a house edge and we have seen countless times that the house is always ahead of us, no matter if we win a bet or two, but the eventual result will always be in the favor of the house and no matter how hard we try, we cannot change that.
So as they say, just accept what you cannot change and you will be better off. If you lose, simply accept it and go ahead, and don't try to double your bet and run behind the losses as that will only cause you more money.