The applied mathematics in junior college is still good, the computer application is more, and the work prospect is ok, and basically
All branches of mathematics can be touched.
If you have the obsession of specializing in mathematics, it is also a good idea to insist that the department of mathematics transfer to postgraduate entrance examination and doctoral studies, and send papers to stay in school.
Just a few years ago, it was boring. If the talent is not high, it will eventually fall into mediocrity, and it is difficult to jump into the enterprise.
Think more about your personality and family background.