Look bro, if you want to hop on cycle, hop on cycle. If you want to stay natty, take something to lower your shbg. It's that fucking simple.
Lethargy can be from various reasons though. Like, for instance, maybe you are slightly deficient in B1, causing you to not properly utilize carbs ... or maybe your cortisol is always sky high, heck or maybe you don't have enough cortisol and to much gaba and you are in a constant lethargy parasympathetic state ... But, fixing your hormones first is a must.
I must add though, that if the E2 test wasn't sensitive, the numbers you're seeing don't mean chit. And I presume that your estrogen is actually in range. I remember when my e2 kept reading low, and I went to my endocrinologist where we did proper testing and sure enough, my e2 was a.ok.