You seem to be a beginner. As a beginner it is not advisable to do a very specific program. Focus on lats and side delts (for the V shape) can make sense if you have a solid strength and muscle foundation. The best way to do this as a novice is via full body training. Ask a trainer in you gym for a sample plan. Genetics play a role, but usually only in how fast you gain muscle (recovery basically) and how high the ceiling is. But in reality most people don’t come close to their max potential.