F-16D barak II What i’m doing wrong with this plane?

What i’m doing wrong with this plane? Constantly dying to R-77 and Mica fox 3 missiles they are chaff resistant or what?
Also why F-16D don’t have AIM-120 instead of Derby that has complete short range?

my score on it is 73-40 i almost never died in close combat most of the time im getting killed bvr

They’re have narrow notch angle. You need almost perfect 90° to notch them.