Do you have a log here or more info about what a normal 7 day week looks like you in terms of food, sleep, work / family stress, and lifting? (how much lifting, what goals you have, how frequently, how trashed is your CNS, are you eating to support it, etc)?
Since it looked like you guys have found with your numbers that TRT probably isn't the knee jerk go to, and smont did recommend some OTC solutions I think knowing more about lifestyle this opens the doors big time for you.
In my experience natty wise, what's good for the goose is good for the gander; meaning fixing fatigue, recovery, and libido are often tied together for otc supplementation. sometimes as simple as maca, horny goat weed, tongkat ali, etc.
to be honest I found
slamming 4 of these an hour before the gym had an effect on all three including aggression on the barbell and it's a cheap otc supp.
This one also I felt had a huge effect on me and the
main ingredient here is the ashwagandha (from a libido stand point) IMO.
on top of those things, eating more carbs, getting more sleep, and lifting 4 days a week with 2 on 1 off vs 5-6 days a week all had huge positive effects on me. I'm also 40 and not on trt or any thing else for the most part.