English has the peculiarity of having two variants of the same word: “gender” and “genre” with slightly different meanings.
You could lean on it and go with genre. But just changing the word is unlikely to help much, the concept itself is deeply associated with genitalia in English culture, you’d still need to explain it.
It ends up being complex, but it doesn’t start that way.
These games are very long and the mechanics are slowly added in tutorialised fights spread out over the story.
In practice this means the battles are dead simple for the first ten hours of gameplay, you’ll be 40 hours into the game and still get tutorials.