Hi, im a 6,13 and 190lbs guy, i tried many diets in my life, but a keto-ish diet runs for me best, my body responds very well to those high good fats. In this keto-state i have more overall energy, im not so tired in the morning or during the day. My strength goes rapidly up
My macros are 220g protein,180-230g fats,50-120g carbs, once in a while (1-2x a month i carbs up, everything depends how i feel)
On non-lifting days i decrease my protein to 170g and up my fats to 250-320g
As said Keto works smooth for me the transition for me takes only few days. I've heard some people take from 2 weeks to several months. In this period you feel more exhausted, exactly what you are experiencing right now.
For me this is a good experience and i defenetly i will stick to it as long as i can.