Cardio is straight forward.

You just need to get yourself moving, raise your heart rate, break a sweat. If you struggle with appetite, the lower intensity the better, as high intensity cardio causes hunger spikes.

Things like incline walking are very very good. There isn’t much to add here other than make sure you’re doing some movement every single day. 15, 20 minutes is literally all you need.

Anything over of course is great, it will just burn more calories and either give you a bigger deficit, or the chance to eat more food.

Don’t do cardio before weightlifting as your priority for fat loss, unless you are on the obese side, should be maintaining muscle, so you need most of your energy to build and maintain muscle, then you can do your cardio.