Again the reason behind this is that any strategy made is actually based on a wrong assumption that the bankroll is taken to be infinite which in reality is not true. Think if it this way - A person with an infinite bankroll, why would they gamble at all?
No one has infinite bankroll, there is fun in gambling if we risk a bigger amount, with fun, we also feel the thrill at the same time.
A change of our mindset is necessary if we think that winning is easy in gambling as in my experience, I can clearly tell it's not easy as what we are expecting.
For newbie who are still in the experimentation stage, they will likely more curious and that will lead them to more loses, well they never give up because they still have the money, but in the end, they will realize that the best thing to do to enjoy gambling is just to have fun and forget our big ambition to win big money.