Hello Ess
I do sympathise with you but don't suffer from this level myself. I still feel tired for most of the day after 9 hours sleep a night but can manage to function.
Why don't you try looking at your diet and making sure that you are eating enough fruit and veg, maybe organic varieties. You might be sensitive to processed food or pesticides. I started eating healthily 3 days ago (again

) and am already feeling less, ummmm, leaden. Exercise might help - it always gives me more energy.
If none of the above appeals, or works then look on the bright side, as I do, when I'm sleeping, I'm having lovely dreams and not eating