Looking at your last 5 scores, I want you on my side with that handicap index of 21( Unless you are playing a short,treeless course with no water,bunkers or OB with a slope rating of 55). Your handicap if you are playing an average course(slope 113), will become around 15,5 or so! As a teaching golf professional for over 35 years, I would start seeking out someone to help your short game. You will lower your scores faster and therefore enjoy golf more.
How many yards of draw do you play? When you hit your fade how far right does it go? If you are adverse to taking lessons as I think you are,get some alignment sticks and practice swing down your target line.
If you ever get to the USA,come to Erie,PA and the 1st lesson is on me.
Mike French
Scenic Heights GC