(So basically my characters, whether male or female, only ever sleep with females.)
If a game gives me the option to play as a female, but there's mainly f/m content and only one or two token f/f encounters, I don't bother.
The only exception so far has been Corruption of Champions, where I also had a save with a female MC that slept with males as well as females, because there's a lot of pregnancy content that's only available that way.
I definitely prefer to self insert so I like male protagonists but every so often I enjoy putting myself in the opposite sex's shoes. If the game is good though it doesn't really matter.
In traditional games, I tend to play female MC because I feel that they have better cosmetic options and overall look better imo. For sexual games, I play male (or futa) MC.