Which countries in Europe can study immigration or obtain permanent residency through doctoral programs?

Germany is better, but Germany is a non-immigrant country, so we can only find a job first, and then slowly apply for permanent residence.

The Netherlands, if it is not a scholarship or a public school, can directly graduate and immigrate.

Sweden and Denmark, but there are short sunshine hours. I wonder if you mind.

Britain and France are also hard to treat at present.