My understanding is that your reaction is perfectly normal. Opponents of the LCHF diet always say that it is the carbs that give you energy. Supporters of LCHF will say that you can get your energy from fats. I started with a VLCHF diet and it worked wonders for my BGLs. However, I noticed two side-effects:
a) I could not eat enough to keep my weight stable; and
b) I was low on energy.
I increased my carb intake to about 150gms per day and sought other ways to keep my BGLs within reasonable limits. So far, so good. The increased carbs have:
a) Stabilised my weight and
b) Increased my energy levels.
I would say that you have "manned-up" by tackling your diabetes head-on. Just keep trying, keep reading, and keep testing.
Best of luck,
Peter