Keto, if you have to put a name on a diet, works wonders. Not just for fat loss but also sugar cravings. I run a modified keto diet using a 3 day 1 day rotation. Three days I eat my proteins and fats plus 90 grams of carbs, then one day of only proteins and fats. Use a steroid that reduces muscle loss, like Eq at 600mg a week plus 400-600mg Test Cyp or enanthate. Fat comes off, muscle stays.
I think Tren eats muscle as it increases feed efficiency, thereby looking for calorie sources if you aren’t consuming enough. Don’t get me wrong. Tren is a wonder drugs but there’s a lot that goes with its use.