Honestly, I like both 2D and 3D games. But if I had to choose, I'd probably pick 2D because that's what I started with and what I've played the most.
I think 3D games are great too, although some of them still have a few awkward animations. On the other hand, I really like games with realistic-looking character models.
I actually played a 3D otome game on the Switch not too long ago