I promise you this will work if you can show some discipline with it. Being a great putter is one thing that you are or you aren’t.
However, you can become a competent putter for your skill level by simplifying your approach.
Stop trying to make putts.
I know, I know, ridiculous.
Read the putt, line up to the line you read and forget about anything but hitting it solid and the right speed. Outside of 18 inches you have very little control of whether a putt goes in or not. You try and hit it solid with the right speed and it will go in or it won’t.
Almost every bad putter I have ever seen gets too line conscious, or hole conscious, steers the ball and doesn’t hit it solid.
Putts not hit solid bounce more and/or lose speed when they get to the hole and miss on the low side or short.
Remember Doug Sanders.