My best cycle was with Tren and TRT Test following Marcus diet prime prior to the cycle starting. There's no cookie cutter answer to your diet question as everyone is different. It's also dependent on training intensity and amount of cardio. Some people are also carb sensitive, some respond well to Keto. When it comes to nutrition, you really have to connect with your body and track as many variables as you can to get the best sense of what works for you.

Keeping a training log, using the mirror, taking progress pictures, and taking measurements is way more beneficial that a single number from a scale.