my friend got a uai of 29.9 a few years ago ..
she went to tafe, did science .. transfer to uni .. did medical science and now shes in her 1st year pharmacy .. its possible! so you dont really have time for self sorrow!! your only 17/18?! dude .. you got a whole life waitingg for you! you dont neccessarily need to get into uni straight away .. do pathways. =D
my uncle's friend was 40ish when he came to aus .. he did a tafe course .. and later transferred to uni .. to do LAW .. and now he's a successful lawyer.
its just a matter of choice .. whether you want to get somewhere in life or not.. and tafe will be your first step
goodluck!!
PS. band 1 in maths REALLLY did destroyed you, Tcbgibo