Thailand needs all the visitors it can get, just have a look around and see the devastating effect on local communities the lack of tourists has had. Rich or not they all eat sleep and drink somewhere spreading the money around keeping the communities an income.
Things will not improve untill things are back to pre covid travel conditions.
You must go to the Thai embassy site near you for detailsif applying from Aus. I did mine in Thailand a year ago and just renewed it in January this year.
The best way is to go through the official website.
you did. OK so keep your passport on you as its actually the requirement in Thailand to have it on you at all times. Not that I've ever been asked for it in 17 years however it is the rule so you can't hand it to a shop as security. 👍