Should I buy a house?

I everyone I (22f) and my partner (22m) are wondering whether or not we should buy a house. We have around 140k in savings and both earn combined 150k.

We currently stay rent free at my parents investment property but we both want to invest young and wait on potential capital gains.

We are both around 50k combined in hecs debt and have no other debts at all. We are wondering how accurate those borrowing calculators are and whether or not banks would lend to us as we both just started new full time jobs after working casual for a year. Would the banks deny us say in two months if we apply?

Anyone with experience can provide some advice would be great. Thank you!