Any way to increase a low gonial angle? (Photo)

Although your words are clear, their meaning could easily be misunderstood.
Are you saying you'd like to have a higher jaw angle? Your example picture (person) has a different shape overall. Perhaps you want to vertically increase the height of your chin and achieve the "angular" look you like.
Reviewing the different possibilities and working on a design that will more likely remedy your aesthetic concerns is essential.
Best wishes,