The first rule of flying in combat is "you never, Never leave your wingman!"
If this rule does not apply to you because you don't have a wingman, then your first mistake came when you took off without a wingman and tried to go solo, finding yourself running scared from that 27/33/J11. Your wingman would cover you in those situations so that when you're egressing on the deck and that bandit is on your 6 chasing you your wingman comes from his 9 o'clock and splashes him.
Too many people fly alone and forget the basic rules of engagement, then find themselves in bad situations and wonder what happened. Everyone should change your call signs to "Maverick".
As stated by the other posters, if you do find yourself without a wingman and you're running cold from a bandit, the ONLY time you should turn around is when you have friendly SAM or A/A support in range or when you have a mountain, hill, or valley where the bandit can lose visual and or radar contact of you. Then you might be able to turn around and get a quick kill with either an AIM-120 in visual mode or an AIM-9X off boresight with the JHMCS. Forget trying to find them on radar and just go to ACM and look out the canopy!
Please review the info on this page (link below) for a better explanation, and remember "you never, Never leave your wingman!"
https://www.quora.com/Why-is-air-combat-better-with-a-wingman
