Most studio shoots are built for speed and repeatability, so they use a lot of lube, keep lighting flat, and limit fluids to stay clean and stay on schedule. The performers also need recovery time, so scenes are edited to look hot without the mess. If you crave something messier, I’ve been watching amateur clips on Swapsmut with big black cocks https://www.swapsmut.com/videos/amateur/bigcock-recent.html that feel way more genuine.