Does anyone have any information on Low Testosterone?

Im 20 years old 6'2 but only weigh 155lbs. I work out 4-5 days a week and never see results. Rarely do I ever go up in weight. It seems like nothing changes. I also have no facial hair. My whole life Ive been a typical ectomorph that acts awkward and Ive never had the aggressiveness required to be a successful athlete despite being skillful at specific sports. I also never get morning wood.

I dont wanna blame all my troubles on possible low T and maybe i should get my levels checked, but has any Redpill guys been diagnosed with Low T and noticed a significant difference once getting testosterone or doing steroids?

I dont feel masculine and I look more like a 16 year old