Poker is full of people with different experience, skill, and comprehension. It's a skill like riding a bike and some people can jump a gorge with a bike and others can barely deal with keeping it upright.
So the question is, when it comes to bad players, is how do you deal with them? There are some that will not understand why their play was foolish, or how you tricked them into doing something dumb.
Here is the reality; some of them will never understand how badly they played. Some will get it and look back and realize the stupidity. Hitting a 2 outer or even a one outer to beat you may not have been realized, but they are so busy raking in the chips they won't consider the incredible luck they had.
The reality is: every one who sits down is dangerous. You cannot stop that. You cannot avoid risk in a risky endeavour like gambling.
Since you can't change anything about either the cards or your opponents then you have to be able to overcome the adversity and not let it affect you. Instability leads to bad decisions on your part that you will need luck to sort out. And if you're good you are trying not to just "get lucky". You are trying to exploit the weakness when the advantage is yours.