Dogfighting with jets is pretty cool, and 1v1 is one of the best ways. Missiles are super easy to avoid most of the time, so it's all about guns if your opponent is any good.
Those deathmatches are cool but I suck at the flying in this game, any tips for flying??
Tips on flying in general? I'd actually recommend going through flying school in the single player game if you're really struggling. A few of the things they teach about knife flying and other maneuvers are actually helpful. Beyond that, take out something easy to fly like a stunt plane (Mallard) first and practice in that. The jet is similar, but way faster and harder to control in tight situations until you get used to it.