The way I figured out my major was actually very fun. I was set on being a psychology major, but at the same time a friend had convince me to join a team for a engineering competition in which we designed a recycled materials alarm clock mat in which you had to stand to turn off the alarm. Our team managed to win 2nd place amongst schools for the entire country. This event allowed me to realize I wanted to dedicate my career to engineering, instead of psychology. Sometimes life throws random things that can change your mind forever, and you gotta be in the look out for that.
My advice is look into your interests, hobbies, passions, classes you enjoy, and from there decide if a path is right for you. Also, remember that declaring a major in your freshmen year doesn't mean you have to finish that major, you can change, move into a similar, or completely different major. This is your own decision, and I'm sure you'll find your path soon enough.
Hope this helps. Best of luck!
Your foundational courses in college should give you a broad exposure to the different faculties out there! If any of them seem to interest you, check out an introductory class in that topic and if it works out you can progress to an advanced class and so on! Don't stop trying and exploring what's out there!
Below are a few suggestions to help you acquire information on the subject :
1. Read the course details offering by the college in details. If you have any question, you can check with the college by email or phone
2. College may host information session. You can participate and discuss with the professors if possible.
3. If you know someone who are studying in the subject, you can have a chat with them
4. Check with college if they allow any sit in in some courses. You can feel how the courses are conducted and understand the content.
Hope this helps! Good Luck!
You should follow your heart and compassion, rather than major in the most wanted/popular field.