Are there any supplements or lifestyle changes that'll help reinvigorate my libido once again?
I really miss the days of my early-mid teens of being able to jerk off to porn, and cum 3-5 times daily with no issue.
Now I'm 21 and I can only do it once a day, and I feel like I lost my edge.

I'm not interested in drugs or anything illegal, only supplements or natural changes I can make in my lifestyle. It'd be even better if it increases cum and pre-cum volume, but the focus is on sex drive.