In fact, there is absolutely no need to worry. As the name implies, mathematics is dealing with numbers. In fact, mathematics has a wide range of employment.
The first is the actuarial field. Actuaries in society are also high-end occupations, which sound very high-end, and can be subdivided into economic, financial and other fields.
Then there are jobs related to computers and information technology.
Finally, at worst, you can be a math teacher, and the education industry will always give you the bottom.
In fact, the employment of mathematics is still very extensive.