Xbox Controller and Keyboard

Hey!

I know the basics of flying, and have been using the Xbox controller as I’m new to flight sim.

I seen that the keyboard controls are therefore defunct if using a controller. So I can not select autopilot, adjust Altimeter etc etc.

Is there a way to get them working together in unison?

Also, slightly different. A320 on landing just deploys full power when you’re sub 1500 feet. Am I missing something, or just pitching too high?

Thanks in advance!