How do I know which terminal I'm on my way out

Download the app of the airline in which you fly, it constantly indicates lounges and terminals, although it must be said in the flight information

You have to be aware as they can change the terminal and boarding room.

This information is always on your flight ticket. However, it is better to check hours before in the airline app or on the website of the airport you are arriving at.

Only the information of the departure terminal arrives, but it can vary especially if it is a connection, I recommend you download the app of the airline with which you travel, so you can check the updated data of your flight

In the information of the tickets that arrives to your mail, all the information appears in which terminal you arrive and in which one you leave if you have a connection.