If Your Lie Angle is Incorrect - Poor Golf Shots May Not Be Your Fault

reflectionbayg... - Brendan adjusts the lie angle just 2 degrees on a pros club and he hits it entirely different with a nearly identical swing. Your golf clubs should be fitted so that they are about 8 to 12 yards difference in distance.

[@unknownKnownunknowns]

How can a golfer be certain that off-center hits are the fault of the angle and not the fault of their swing? Should we get our swing corrected by a professional before we go for a fitting?