Can I also enquire about your study habits? Whilst all the pathways suggested above are excellent options; they all require you to achieve a certain grade/threshold before the Uni will allow you into their actual 2nd year degree program.
If your ATAR is due to a factor OTHER THAN a lack of effort (i.e. rural/disadvantaged background, personal issues etc.); then these courses would be an excellent option. However, if your grade is a reflection of your effort; then I advise you to have a good look at your study habits - before you take out rather expensive gov't loans (these courses are FULL FEE) to enrol in these courses.
I know several kids with similar scores to yours and enrolled in these programs. Some achieved these grades due to financial/personal issue reasons (rather than a lack of effort); the others were because of a lack of effort (i.e. poor study habits). The majority of the ones who made it into the 2nd year degree were from the 1st group. The majority of the 2nd group dropped out after one semester in the course.
Changing your study habits is one of the hardest things to do as a teenager/young adult. Getting another shot is easy; but taking advantage of it is mighty difficult.