Some who come in come to smuggle drugs and people.
While this is true, most do not. And some end up in criminal activities because they face a lot of hostility and are not given any real opportunities. On the other hand, there are a lot of criminals that come from families living in their homeland for generations.
Places like Eastern Europe Poland and others who limit immigration and do not let in Muslims are not having the beheading, stabbings of killings as England, Germany and the USA.
Of course, there are also muslims in Poland (and they are exposed to a lot of hostily also driven by the government). Do you really think there is no murder in Poland? You just do not hear of it because it is not reported in your country and there is no political will to share it globally. On the other hand, target of Daesh is the free world. They want to devide and then recruit from those disappointed. They are quite transparent in their strategy. So, of what use would it be for them to attack a country that is already fighting muslims? Each time there is an attack in the free world and people start to discriminate agains peaceful Muslims they are doing the job for Daesh.
In Germany there are no go zones Women have been groped and rapped.
"No-go-zones" is a political combat term from the right-wing. Allegedly, it defines an area where even the police would not dare to enter. Again: there are NO no-go-areas in Germany. The last time I stated that, you came along with a list of incidents. Of course, you can collect this for every country in the world. But it still does not make your claim true.
Japan has very limited immigration and is very hydrogenous and it is very stable low crime and the people are happy.
Japan has an issue with speaking up. It is not that easy to evaluate a culture that is far away from yourself. The JW also seem to be very "happy" as long as no one speaks up: https://www.nytimes.com/2017/12/29/world/asia/japan-rape.html