I call low carb diets, the “get weak and crappy inside in all the places you can’t see” diet.
I have very simple macro goals, carbs around 50%, fats 30%, and protein 20%, or thereabouts. Sometimes more protein after heavier lifting in the gym. Any lower in the carbs and my endurance drops and I can’t push out as many reps with heavy weight.
I do keep sugars fairly low though, but I don’t go overboard with that either. A little sugar seems to improve my cardio sessions.
Your diet actually sounds like the “get weak and crappy inside in all the places you cant see” diet. 50% carbs is NUTS. Your body never has a chance to burn anything but carbs, and if you dont burn all of them, they turn into fat. Carbs are the worst possible fuel for your body.