Hello Cocolemon, welcome to the site.
If the psychologist couldn't help you with different techniques in trying to overcome anxiety, then perhaps they may have chosen the wrong profession, just saying.
By having COVID is certainly not good, especially if you are knocking on the door of depression of any type., because it exhausts you and makes making any decision to be difficult.
I would go back to your doctor and ask them to refer you to another psych, and ask them about the 'mental health plan', which entitles you to 10 Medicare paid sessions.
Can I also suggest that you can contact Kids Helpline ( 5-25 yrs) on 1800 55 1800 by phone, web chat or online.
Even though you are able to overcome COVID, then any depression just takes over, so unfortunately you don't seem to be any better.
If you feel as though you want to defer your masters, you can always go back to it when you're feeling better, I know that's exactly what I should have done, except my parents wouldn't allow it, so I had to finish my three year course, which, in fact didn't achieve anything in life, as I did the complete opposite and enjoyed it.