So, if you had the opportunity to advise people about courses to choose In University, what would it be and why?
For practicality, I can say business related majors since there's a lot of opportunities. Businesses are everywhere and these companies need employees who will work for them. Finance, marketing, human resource, and IT. Competition are becoming more difficult but in these field, there's a lot of opportunities or job you can find. They are in demand as well so it'll be easier compared to other majors.
But if you want high paying jobs or those with bigger opportunities in terms of salary, building your skills is a must. One of the field I can think of is graphic design, as well as IT... Economics isn't bad tho. I'm actually interested to learn more about economy and I think studying economy can really be interesting.
When we talk about job opportunities and market saturation, subjects in business-related majors are better choices as you said, because you can easily find jobs if you have done your major in business-related subjects. After all, almost every business requires employees who can manage their finances, human resources, management sectors, and a bunch of other areas. Even if you don't get a lot of money, you will at least have job availability at most times.
If we strive for higher earning opportunities and are ready to face the high competition, we should go for science-related majors and subjects such as software engineering, IT, electrical, and a bunch of other subjects that if you major in, you will be able to demand higher salaries but there will be less opportunities and more competition, of course.