If you are an Apple iPhone user, you can actually check which applications are tracking your personal data and your location. You can do that with the help of location services. You can turn it on and off in that section.
There are a lot of amazing shortcuts for a lot of things on your MacBook. Just search for shortcuts and it will tell you. There are hundreds of keyboard shortcuts that you can learn.
If you own AirPods, you can actually use it as a listening device. Place your iPhone in the room where you want to listen and wear the AirPods and walk away. You will listen to everything that is happening in the room.