Those are big problems, but the issue is a lack of will, not a lack of military strength. If the will situation changed those threats could be gone within a week.
If the will doesn’t materialise, well, that’s exactly what civilisational collapse looks like in the historical record.
Either way, I’m not really seeing the optimistic outlook for Europe.
In South America they do put in the military against criminal gangs. Why don't the Europeans? Especially considering that the criminal gangs there are predominately consisting of foreigners, meaning they are de-facto a military matter.