G'day TBH. Welcome to the forum, and good on you for starting! If you get a fraction out of bushwalking of what i've had over the years, you'll be very please you did.
I think there will be almost as many opinions on this as there are makes/styles of shoes/boots

So much depends on the shape of your foot, and the type of walking you'll be doing - day walks vs multi-day, flat lands vs high country, 'well-made tracks' vs off-track/boulders etc. Some will say you need high solid (leather) boots for good ankle support, others say they don't stop ankle rolls, go for something light, comfy, less blister-producing and much less tiring.
My suggestion is start with cheaper, lighter weight boots and easy walks, till you know what you can do and want to do. I also am a believer in using a pole or 2, especially if you're carrying a fair bit of weight (on your person, in a pack, or both). I resisted getting poles for years, until I did in an ankle (not bushwalking, just stepping out of a van in the dark

). Once i got a pair of poles, i wish i'd done so 20 years earlier.
All the best