Very interesting that u seem to have both secondary and tertiary hypogonadism. We tend to see one or the other. Primary is when ur pituitary is sending out plenty of LH, but ur testicles just aren’t working properly and will not make enough total testosterone, regardless of how much LH is being sent. Secondary is when ur pituitary fails to put out enough LH, which u clearly have. Tertiary is when there’s enough total T, but u have very high SHBG, which causes free T to be too low, and causes hypogonadism symptoms that way.
Tertiary hyponadism is extremely hard to cure through diet and lifestyle changes, from my experience and understanding. Almost always has to be treated via HRT. But ur hope lies in the fact that ur also experiencing secondary hypogonadism. That can be fixed via lifestyle changes much much easier. So I would exhaust all options in regards to getting ur pituitary to release more LH, before even considering going on HRT at ur age.
The first thing u should always start with is sleep. Sleep is, and always will be, the number one aspect of human health. So go out and get some blue/green light blocking glasses. Best tip I can give anyone, hands down. I recommend blublox, specifically their onyx sleep glasses. Put them on 2-3 hours before ur going to go to bed. Next thing to do is try to get as much sunlight in ur eyes as u can first thing when u wake up. The earlier the better. Try to go to bed around 10pm, and try to get 7-9 hours of uninterrupted sleep. Make sure ur room is blacked out, and keep it as cool as u can tolerate. Around 60 degrees is preferable. Also try to get some form of activity in each day. Whether it be lifting weights or light cardio. Also make sure to finish eating at least 2-3 hours prior to going to bed. If ur not taking magnesium, definitely start. I take it all throughout the day, in a liquid form I put in my water, but if u don’t want to take it throughout the day, at least take some before bed. I’ll link a good video on sleep tips that I watched recently. There’s obv a ton of other lifestyle changes that might need to be worked on, but I would get sleep down first, and then work on the others.