Really focus on upping the WEIGHT and SETS to grow those legs.
Really stack on weight for your main lifts – Squats, lunges, and Deadlifts.
This provides for overall mass.
Then you can hit smaller muscle groups to single out areas you want to grow.
Quad- inner and outer, upper and lower (tear drop)
Hamstring- 3 parts
1. Biceps Femorus ( larger outer area)