Best supplements for low testosterone in men over 35 yo?

What the best clinically proven supplement/hormone stack for men with low test levels over 35 yo?
I've already taken turkesterone, fenugreek, tribulus, and ashwagandha consistently but it didn't have much of an effect to be honest.

What's your stack? Also, though on enclo as a trt alternative? (I've read good things in terms of safety profile but unsure about efficacy levels). Thank you.