1 year
I disagree that there is any way to do it. Ultimately, people don’t want you there and are unhappy enough that they’re willing to die rather than cooperate. It is simply too expensive in terms of man hours, lives, and money to keep a population under occupation like that. At the very least, you need to do as the colonial powers did and exploit a local division to deputize some of the locals to rule on your behalf.

I hate using a joystick for camera control, so I only play 2d titles on my deck. Mostly DRG: Survivor, Tribal Hunter (no, really. It is excellent), and Hades.
BG3 is another good bet too.