The most important considerations for male pornstars (across all fetishes, kinks, and genres) is their ability to get hard on queue, remain hard during the entirety of fucking (which is almost nothing like actual sex... it more closely resembles a normal film set, which I can, from experience, assure you is a HUGE turn-off, and the ability to cum nearly on-demand. A decent-sized penis, at least average looks, and an alright body are next for mediocre-grade pornstars, with high-paid and most-often-viewed pornstars being built, attractive, and hung (at least 7.5" ;long and fairly thick [and of course, these are overall generalizations, not exacts]). If you can meet all of the previously mentioned criteria, then there is a chance that there is-- if not in mainstream vanilla porn-- some niche or sub-genre that one can be accepted into... if you play your cards properly (it is often recommended for males aspiring to "break into" the hetero porn biz to bring with them a willing female who will also perform)...
Phew....