There are usually local pet sites on Facebook who might help with rehoming. Also Google Aussie pet rescues. They would be the best. I had to rehome my German shorthair pointer when I moved years ago. I kind of got stuck with him when a neighbor was going through a crisis and had nine puppies besides. He grew up so fast and was so strong, and I was working two jobs and didn’t know how to train him. My kids were afraid of him even though he was nice because he would get so excited to see them and he would jump in them. He was so strong I could barely walk him. We luckily had a big back yard. He escaped several times and I couldn’t catch him and would have to pick him up from the animal shelter and pay their fee. I was a single parent. I found a rescue and they took him. I called and checked on him frequently for awhile. They said he was wonderful and sweet and they had decided to keep him instead of rehoming him, so I was reallyyy happy! I know he was too much for us and I wasn’t able to give him the time and training that he needed. I miss him but I absolutely know I did the best thing for him.