I have two children who have finished their VCE in recent years, so I understand where you're at. Sometimes the course decisions seem overwhelming but you'll get through it.
I wouldn't worry that your peers seem to know what they want to do. Many of them just think they know but things often change. My son started studying engineering and later switched to arts.
It does help to have a plan, but I'd suggest a broad plan to keep your options open.
My suggestion would be to take subjects that genuinely interest you, as you will likely be more motivated and engaged and, in turn, hopefully do well.
Also think broadly about your areas of strength, as this will help to guide you. What are the subjects you do well in?
My only caveat would be to continue with a second language, if you have one, as this will give your ATAR a boost.
It's a good idea to talk about your ideas with your current teachers and parents, as they know you and will likely have some great insights. Excellent idea to also speak with the school's career adviser.
Kind thoughts to you