Frequency vs Intensity What Matters More for Aesthetics

I am trying to figure out if I should train my muscles more often with less intensity or less often with more intensity. I have seen some people say that hitting a muscle group three times a week is the secret to growth, while others say you need a full week to recover.

As a woman focused on aesthetics, I want to build my glutes and shoulders specifically. If I train them every other day, am I going to overtrain? Or is the increased frequency going to lead to faster results?

I am training in London and I have a very busy lifestyle. I want to make sure I am being as efficient as possible with my time in the gym. What has been your experience with frequency versus intensity for muscle building?