PTE

Hello Mandeep,
You can, but your IELTS/PTE score is a matter of worry. It's too low and won't be accepted. Either you must retake or complete an English pathway program.

Which course are you applying for and what is your qualification?

Hi Arrow, please mention your academic qualification to understand if you are eligible for a graduate diploma. Secondly, PTE score requirements vary with colleges, a score of 43 and above is required mostly.

You need to know that admissions are granted on the basis of academic grades and not alone on IELTS and PTE scores. You must mention your education background and how much you scored for precise information.
Secondly, the IELTS core of 5 is not accepted anywhere. A score of 6.5 above is required. For PTE scores 54 is decent but check for every entry requirement on an university website.

Your IELTS score is very good but all the other requirements depends upon the specific college where you want to apply. So, please visit the college's website and clear your doubts.

Hi
Follow the given below link, and yes, PTE is accepted in Australia.
https://www.pearson.com/news/announcements/2014/november/new-secure-english-test-now-available-for-australian-visa-applic.html

Hello, you must visit the university websites, PTE score requirement varies with every university and college. A score of 42-49 is generally accepted.

If your program of study is longer than 36 weeks, you require NZ$ 15,000 for each year (40 weeks) of study. For a single student this would translate to approximately NZ$ 300-350 per week for general living expenses. Same costs would apply for each dependent.

if you have gap of three years you can get study visa if you justify the visa officer what you were doing in that gap.