You can replay missions for MRP to unlock aircraft and enhancements.
This game has 20 missions.
Hold L2 to brake which allows for a smaller turn radius. Hold L2+R2 to do a quick turn. Let go as quickly as possible to avoid stalling.
Analysis
The F-35C cost 840,000 MRP, which is very expensive. Funny, given that the current discussion about this aircraft program is that the cost is ridiculously high.
I think I got the hang of avoiding enemy missiles. It's surprisingly simple: enemy missiles have slower turning radius than your plane. You wait until they are close (when the HUD alert starts beeping fast), and do a quick turn, and they will fail to hit.
Screenshots marked with 🍒 are created by syltefar and are considered public domain, free to use for anything. If you want to, you can note where you found it and link to this page.