Don't over read.
That's it.
Even as an amateur and pro i've learned to not read too much into the putt. That's just me I guess. When I miss a hard breaking putt I always miss it to the outside.
Find a good spot to aim and ding it... or on harder breaking putts aim accordingly but hit it a little too early or late; depending on which way it breaks.
IDk.. just my inapplicable experience. I'm a loser. Everybody hates me. My opinion is worth nothing.
Also adding a little speed with good aim works wonders.
Yet be warned.. knowing these simple facts and applying them are two different things.