und and keep a close eye

be rounded by the enemy, turn aroon them, if the other side fires missiles press X to use the decoy missiles, know the position in turn, press 2 to switch to missiles, lock on to the enemy aircraft and then left click to fire, usually not a shot to get down, after all, the enemy also has decoy missiles.

Press 1 to use the machine gun, but it's not very good at aiming in flight, so it's not very useful either.
You can switch to a machine gun immediately after shooting a missile for double insurance. The next air battle is the same, dodging enemy missiles and then letting them eat your own missiles. Press 1 to use the anti-radar missile, lock on to the target and fire.