I want to immigrate to Singapore and have relatives there.

Yes, Singapore is such a country. It accepts international students, then applies for a work visa to stay, and applies for immigration after finding a job.

This is usually the process. To be more specific, it is your school performance, work unit and so on.

Generally Singapore can get a green card in two years. As for work, it is natural to work hard. The general job is just for immigration, so it is very easy to find.

And your school time, if it is four years, is no problem. If it is 1 year or two years, they will give you time to find a job and work longer than the average person to get a green card.

good luck