What are your sugars like now?
I know high sugars make me very sluggish and I have much more energy when they are in target.
This is normal.
Have you been tested for Type 1? If you are finding low(ish) levels of insulin are helping when nothing else did, you may have been misdiagnosed and it is worth getting that corrected as, wrongly in my opinion, people with Type 1 get access to more technology.
Note that we cannot (and should not) diagnose on the forum - only a doctor can do that.