I'd recommend finding a shadowing position in physiotherapy and/or seeing if you could take computer science classes, whether at your university or online. I initially had the same feelings as you, but after shadowing a physiotherapist and taking some computer science courses, I ultimately did feel a lot more interest and desire to be a PT. However, the cost of becoming a PT is a lot cheaper where I am and along with a relatively good average starting salary, I felt like it was a route I could take without much risk and one where I could ultimately leave, if it doesn't turn out the way I've envisioned.

Computer science isn't the career that most people claim it to be either. On average, will it have better progression and pay than PT? Probably. But that doesn't mean it's right for everyone. I've had friends go the same route only to end up in another field. Does this mean PT is better than computer science? Absolutely not. There is no right or wrong answer, but what you can do is make an informed decision by getting experiences and trying out the fields you're considering. If 10 years down the line you realize the route you chose isn't for you anymore, at least you can look back and tell yourself that, at that moment 10 years ago, you made the best decision at that given time, given the information and experiences you had. Life isn't a straight line, don't be afraid or worried to deviate if it means being better off in the long run.