Everyone's Netflix recommendations are different, based on your viewing history. There are plenty of male protagonists in their stable of content, lol.
Often the problem is bait and switch. For example, I went into the Witcher series expecting a show focused on Geralt, like in the games and books. Over the seasons it progressively devoted more screen time to Yennefer and Ciri, effectively making Geralt a side character in his own story. Now season 3 is sitting at a 19% audience score according to Rotten Tomatoes, viewership has cratered, the actor for Geralt (Henry Cavill) has left, and people are betting that it will be cancelled.
> What does the recommendation system have to do with the available content...
It impacts substantially your perception of what Netflix has on offer.
My kiddo's subaccount has all sorts of stuff I had no idea they carried. If the parent poster is seeing exclusively female leads with effeminate male supporting roles, that's what Netflix thinks they want to see.
It was unusable in production. It's also the case the Netflix' goal isn't actually to give you the best recommendations; it's to keep you as a subscriber which is a correlated objective but not the same thing.
Just take a look at the new content, this isn’t a recommendation problem. This is a problem with the show greenlighters all being women for the most part over the last couple of years. Even international films are only allowed on the platform if they toe a certain line.
Maybe there's another explanation.
https://www.bbc.com/news/technology-66472938
https://www.buzzfeednews.com/article/katieheaney/facebook-kn...
https://mashable.com/article/bisexuality-queer-tiktok