Continuing our chain from below.
First off, what do you think the actual legal migratory process is like in Germany? because i've looked it up and it's not easy, in order to have a work and residence permit you must already have a signed job with your employer having already paid for all the paperwork on Germany's side, already paid some social taxes on your salary before you even get on the plane, you must have a private health ensurance security contract that will cover at the very least 30.000Euros per year because you will have no access to public health in the first 3 years and then, you may live under temporal working visa which must be renewed if you wanna stay there and your employer deems you a NECESSARY asset for his company, my man, is no like "just go xd" and "ez" , no first world country is pro-legal immigration today unless you count svalbard as its own country, which it isn't and there's even some caveats there too which im not gonna get into.
Alright so you talked about the demographic shifts, this isn't something to be afraid of so long as it is an organic and genuine shift, the problem with Germany is that the demographic shift is almost manufactured from the top, Germany has made a TERRIBLE decision which unfortunately, they have the money, structure and infrastructure to sustained.
Germany take's in foreigners, gathers them all together concentrated in the same place and provides them with serious economic support, that is NOT immigration, that's just something perverse treating humans like animals caged in zoos and feeding them juicy beefs, and like you say, the pension system is a huge factor in this...what the German elite and political class didn't predict was that a lot of these asyled foreigners will never pay the amount of taxes they calculated in the first place but they WILL charge that retiree pension, making the fiscal hole even worse, this is why Germany has slowed down with this refugee program quite a lot compared to 2016-2018.
Also the next crisis will be fiscal and then monetary, the financial side will be a fucking joke compared to the wrecking ball that's about to hit the governments populist fiestas of huge welfare and "equality" nonsense agendas.
"I would like to be in a country where maximum liberalism is wished and works, but it is too late for that here."
It's not, you can make a difference, if you truly believe in the ideals of Liberty, individualism, anti assistentialism, anti big government, anti taxation and anti-equalitarianism, all you gotta do is vote and then justify your vote talking with your close relatives, it makes a bigger impact than you could ever imagine.
" What do we do with the millions of criminalized foreigners in our cities once we cut social welfare ? Immigration is a trap and no economic policy can get us out of trouble"
Once you cut all assistentialism, you can finally DRASTICALLY reduce taxes and regulations, when you abolish most taxes and regulations, you get a massive GROWTH boom, in which millions of new, genuine jobs, companies, goods and services are created, no matter how many foreigners without social checks you there are left, there will ABSOLUTELY be a genuine job waiting for them in the private sector, so that they may work and become real citizens.
If you care as much about race as you portray you're going down the wrong path my friend, i dont agree with you but im always open to talk to you, just keep in mind that is not whats outside people's head what makes them who they are, it's what's inside that head.