I am wondering about drugs and alcohol use/addiction.
Yes the part that feels off is someone young, inexperienced, or mentally ill/ intellectually impaired who is acting in a way he thinks a criminal would behave, dress, etc. Maybe based on TV or movies. Not the real world. But it is very poorly done. This is what feels off to you,
Yes his comfort level was not from overtraining and confidence like you would see with an experienced criminal, or highly trained military etc. And they would understand the importance of the task ahead of them. The serious consequences for failure, etc.
So we are looking perhaps at a teen or young 20’s male. Someone whose frontal lobe is not yet developed completely so is reckless, poor judgement, cannot envision consequences or seriousness of behavior. Add a great deal of testosterone in a person who does not yet know how to handle that in socially appropriate ways. And drugs or alcohol.
Unfortunately, the risk assessment of this type of person is not good.
Interesting in terms of the gun.
Did you see the gun on this guy in the initial frames?
And then later he moves it?
Or did someone hand it to him do you think.
There are many ways to act threatening with a gun.
He choses to use a highly sexualized placement.