Find your weakness...
Having long arm bench press have always be a pain in the ass. Always trouble to start from chest lock out even if the bar feel light.
Then one day i tried floor press, just 4 set of 5 reps with medium/heavy weight during my light bp training on thursday.
my bench press increase since, it feel like the range of motion was shorter now.
Same thing for the squat, got trouble to keep my back straight and not bending forward.
just add heavy abs work, then my squat increase.
Solution is never more rep, more exercise.
Find your weakness.