The Drakens are quintessential deltas. You have excellent turning performance for about one and a half turns (Depending on your energy state), but fully commiting to turning will bleed you of speed and leave you a sitting duck for third parties or planes with better energy retention. F-5C/Es are a particular hazard, as they are both manueverable enough to not be one-turned, and will absolutely stomp you if it goes extended. You do have excellent thrust, so you can get your speed back pretty quickly, but you’re vulnerable during this window.
However, the combination of good manueverability and speed bleed means that if you get on someone’s six, there’s basically nothing they can do unless they have the energy to outrun you. This means your best bet is to stay at mid altitude, find a distracted target at a somewhat lower energy state, and try to slot in behind them. Be aware that in turning 180 to chase someone, you’ll often bleed enough speed for them to get away if you at near equal energy states, so avoid this situation as much as possible.
Your missile kit is excellent for the tier, AIM-9Ps (RB24Js) are overall a very solid weapon, but are vulnerable to flares. Try to exploit their reasonable range and off-boresight tracking to fire them at people who aren’t paying attention to you. You will also see a lot of flareless planes in downtiers, against which AIM-9Ps are basically just free kills.
But, don’t take 4 AIM-9Ps. Take 3 and a rocket pod. You can use those rockets as an erstatz flare pod against all aspect missiles. If you see one approaching, make sure you slow to below mach (You cannot fire rockets above mach), turn slightly so the missile has to pull lead, and once the missile is fire, launch off a couple rockets. The missile will be decoyed most of the time. You can also use your good high altitude performance to climb above where these missile carriers can get to and sit above them until they’re neutralized, if you prefer. Worst case scenario, you can fire an AIM-9P at an incoming all aspect missile, which will always spoof it, albiet at the cost of one of your own missiles.
Your guns hit hard, but the lack of tracers make them annoying to use. Try to save your shots until your enemy has blown most of their speed and made themselves an easy target. They can also work for headons, but it’s a dangerous game at this tier.