Hello, I'm new to the game, I'm in doubt about some things in the game that even well advanced for a novice (I think), I tried several times to have a cannon in an aircraft with automatic aim,but I always couldn't do it right, the problem is the automatic aim doesn't "look" up and down, so it's very difficult for the shot to hit.

Note: I'm using Google translator because I don't have fluent English, I only know the basics