1) Mathematics and applied mathematics are the easiest to get an Offer to study in the United States, and most of them have scholarships. Don't give up easily. If it is not too exclusive, it is recommended to apply for this major first, and then wait for the opportunity to turn to applied research.

2) You can switch to engineering, cybernetics, machinery and even finance. Judging from the general trend of international and domestic employment/immigration, your favorite majors such as actuarial science, psychology, education and urban planning are not very promising.

The purpose of studying abroad is nothing more than to get a better job, especially to consider employment abroad in the future, because only in this way can we get the greatest "investment income". Without thinking about it, I chose a major with a bleak prospect, and finally I had to return to China if I couldn't find a job abroad. I earned hundreds of thousands of investment in studying abroad in which year and which month.