This is why I'm saving for a Mustang...
Now, seriously, if you want to destroy a WW2, you have to be more clever than it. I normally use this tactics to destroy jets like this one:
Jets were harmed while making this screenshot
Follow these advices, and you will, at least, survive until a teammate appears.
-Always head to zones with a lot of trees. Jets are extremely fast. In fact, they're too fast and if you go through the trees, they won't be able to shoot you, and maybe they will crash against one.
-Never avoid their frontal attack. Jets aren't cheap (ask Luke Skystalker, he needed about $14M to max it up). What does this mean? Well, they will upgrade for sure first speed and agility, forgetting a very important thing: bullet drop. At 200+ knots, bullet drop makes almost impossible to aim. Also, they usually don't have so much fuel, just distract jets until they run out, and then blast them! Another reason to use frontal attack is that a jet is better in everything than your plane, the only way to make a balanced fight is using it.
-Attack with more planes. WW2 pilots usually get focused in a single plane, so be a distraction while your are teammates shoot at it.
-Use the side attack. This is my favourite way, because it works with every plane that is better than yours (I used this tactic to face Schuckerts with my SPAD).
Here you can see that the biplane needs much less ratio to get to the same place. Now you'll be asking: 'doesn't the jet have less turning ratio than my plane?' Yes, it has, and that will be a fatal error for its pilot.
Aaaand that's what we were waiting for! The jet will get just in front of you, and it will eat all your bullets. Sadly, this works better against WW1, with jets it's difficult to get the 4 shots to brought them down.
-Try to shoot at their front. Some jet pilots are very experiencied with that plane, and know some techniques to avoid your bullets (one of them is just rolling in a weird way). While they are doing that, wings are moving, but plane's body not. Shoot at it and that guy will get amazed with your skills.
-Move a lot. Drop bombs if needed, this is a deffensive tactic. If none of those advices worked, and the jet is on your tail, try to make fast and unpredictable movings. Also the 3rd person camera is helpful to know at where is it shooting, but I personally don't use it.
With all this, you can even have fun destroying jets, I love when I bring down some...
Oooor you can forget all this, subscribe and choose WW1 rooms until you have a WW2...