Issue seems more about prominent calves creating a bow effect.
The adjustment required on finished trousers is to open the entire length of the outseam and inseam. You have to separate each of the 4 panels of the trouser. The front part is shifted downwards at the knee notch on the outseam. This makes the outseam longer to accommodate the length needed for the curvature of your leg.
The front knee notch is moved up/above the knee notch on the inseam of the back part. This shortens the inseam and straightens the inner line of the leg. You also need a bigger circumference around the knee and calf.
Think of the front panel as a plane you are rotating to make the outseam longer/inseam shorter. ( ) This is the shape of a bow leg. You need extra length over the outside curve and less length on the inside of the curve. This makes the leg look straight.
Its not a big deal but takes some time so that means it's going to cost. You also need someone who knows what to do.
The result can vary because you are limited by working on a finished garment compared to cutting a trouser and being able to make this adjustments during cutting and before construction. In other words, altering may get you 50 to 80% better but maybe not as good as if the trouser was made with the necessary adjustments. Changing the crease has a small cosmetic effect but isn't changing the drape of the trouser leg.
You have a high right hip that needs to be adjusted for and need a straight back to clean up the wrinkles along the back part of the trouser.
Technical explanation from a technician