​What small business would be more profitable?

I am almost done with my undergrad. I’m graduating in December with a BBA in marketing, and I am also starting an online MBA program in January. I would like to start a small business to pay off some of my student debt while I figure out what I want to do in the long term. For some additional background, I’m minoring in graphic design and have a lot of experience through internships. I’m also a certified personal trainer and have been training people since 2021. So my question is, do you think an in-home personal training business or a freelance design business would be most profitable? I live in a small area—the population of my town is about 30,000. Graphic design I feel is very over saturated, whereas there aren’t many personal trainers who will travel to and bring workout gear to their clients’ homes. But I’m torn, so I’d love to hear your thoughts.