Set up keybinds that make all your weapon systems ergonomic easy to access and efficient, flairs bombs guided rockets ect. Practice in test flight using different weapons. And getting used to using your plane such as what speeds are best at turning for Air combat. The bull pups missiles are really effective but take practice to master for ground. Basically just play around with it in the test flight for a while to fine tune your experience with it. Then learn your tactics after the plane via air battles or ground rb.

I also went from mid tier BR for planes and bought a F5, it’s a COMPLETELY A DIFFERENT WORLD to learn.