Which country can I immigrate to in this situation?

It is difficult for you to immigrate professionally. You'd better find a professor who is willing to take you to some research laboratories abroad, or you can start from your current school, which may have a better chance.

If you really just want to immigrate after four years, you can go to Australia or Singapore. There are more opportunities in Singapore, and most of them are from China.

It may be difficult for your immigrants to be skilled immigrants. I suggest you reconsider.