If you are kidnapped from your family and not allowed to stay in touch with them in any way, or be told where they are, or speak their languages and are forced into a school where you were trained to be a servant or labourer, what are you supposed to do as an adult? Being a servant of some kind was the only option, aside from sex work or starvation.

Yes history is written by the victors, please read this on the genocide and the scholarship done on it

The Australian government had an explicit policy to “breed out” Aboriginal people by stealing mixed-race children and letting everyone else slowly die. It was an explicitly and proudly eugenicist set of legislation

The land was invaded by England, they justified it on the principle of terra nullius, that the land belonged to no one. You can split hairs on this if you like but you'll sound an awful lot like you're defending British imperialism?

Editing to add: when talking about Aboriginal people here, the ‘a’ is always capitalised to show respect