3 cap here. Above average in all phases but not elite in any.
GIRs are the key. My scores absolutely track to GIRs, even with my brain dead strategy. Outside of 125 yards, I pretty much ignore pins. Just stack GIRs. If a pin is close, I get a look at bird. If a pin is tucked, then just two putt and find another opp. If have wedge in hand, I'll shade a little towards the pin but still use middle as the bailout.
Hitting it longer/straighter off the tee is the cheat code to more GIRs.
The PGA make percentage from 20' is 15%. Getting decent at putting is quick and low effort. One or two lessons, then spend a little time a putting mirror hitting 5 footers + ladder drills.