actually most unis have quite a lot of bonus points on offer, so its very possible to get into a course even if your raw atar is a couple of points below what their cutoff usually is.
e.g. here's the bonus points offered by unsw if you want to do commerce
if you get a band 4 in english...
i feel like one-on-one is too risky and expensive. private tutors don't have proper resources and sometimes don't know what they're doing and teach you the wrong thing. i feel like a reputable place for chem and phys is the way to go like peak or cognito