Dude, you’re the one talking about how guns can stop theft and your example was a theft that you were not able to stop with a gun. That’s not my fault.
Sorry, you being unable to come up with a good example is not my problem, so your question is moot.
No, you don’t want to answer it because you know how easy it is for me to find hundreds of videos online showing exactly what I’m describing and you really don’t want to admit it.
If “your gun didn’t save you in this one instance” means I shouldn’t have one, then the counterfactual should just as easily mean I should. But you’re not interested in applying your logic in both directions because that wouldn’t suit your position.