but it's just not the case that no subs want or are willing to sub for/to young doms.
Never said it was, just that it's a lot less likely. Given the rough demographics of the site, our OP is on the very young side of the spectrum. Most of the ladies here are simply older than him, and in vanilla or BDSM couplings it is far more rare to find older women with younger men. It's even more rare when that younger man is still a teen.

I suspect that many younger men misinterpret these difficulties as a slight against their burgeoning Domly abilities, when in many circumstances that's likely not the case.