There is no such thing as “pre-med” major in college (except at Penn State). Pre-meds can major in any field so long as they complete their pre-med requirements. I always recommend pre-meds study a field that they enjoy (because it’s easier to get good grades in something you find interesting and like) and one that offers good post-graduation employment options should you not get accepted to med school.
Many pre-meds major in bio simply because bio has the largest overlap with med school admission requirements and it just makes scheduling easier. But it’s not necessary.
Neither of my daughters majored in bio. Their med school classmates had a wide variety of undergrad majors, including theology, business, music composition, gender studies, English Lit, Italian, engineering and forestry.
Bio majors can find jobs after college (beside teaching biology), but you are going to have work harder at finding one than say an engineer or business major will. You can improve your employability with a bio degree by learning some computer coding/programming skills. You could either a take a formal class or self-teach. You can also improve your employability by doing summer internships with biotech, pharm or chemical companies.
Plus you can use a bio degree to enter a variety of medicine-related careers (most will require additional training–usually a MS). You probably have never heard of or thought about most of them…Radiation therapist? Anesthesiology Assistant? Cardiac Perfusionist? Genetic Counselor? Medical Dosimetrist? Respiratory Therapist? Medical Librarian?
Here’s a searchable database of health-related careers–
https://explorehealthcareers.org
Good luck with whatever path you decide to follow!