What major can photography art students choose in universities? Or can I only learn photography?

The closest, of course, is photography.

Other similar, there are movies, graphic design, these aspects are complementary.

There is a skill in hand, and it is better to learn it well. In the future, I can work as a commercial photographer, magazine editor, filmmaker, artist/painter, etc.

You must study major and technology, and you will be popular in the future. The most important thing now is to find your hobbies as soon as possible, or prepare to spend a lot of energy to practice your ideals in the future.