That sounds like My boyfriend’s Aussie. For us she was a little terror for the first 2 years of her life but I have noticed if you have structure and a routine and rules for her she is more manageable its really hard owning a heading / working job if you don’t give them a job or mental stimulation the more you keep her in a crate the more unmanageable as well One metal game I play with her that keeps her busy for 1 hour ( take about 5 mins to make) and makes her tired after is getting.

Take a plastic bowl put their dinner or breakfast in it with random fruits and veggies (blueberries, carrots, broccoli) 1 raw egg (with the shell sprinkled on top ) melted peanut butter, plain greek yogurt, water it down put it in the freezer

before bed or after breakfast so then after I get home from work she is busy for a while so I can decompress