I'm bi and don't know how to deal with family members

I'm bi and my dad is not accepting towards gay/bi/trans people even though he claims to be. He said on the way to a movie that being gay wasn't natural and that it was an aberration (his words) and refuses to use trans peoples' proper pronouns until they've had surgery. he calls bi people greedy and argues about that. He brings it up at the times when no one has even mentioned anything about the Lgbt community. He just gets mad about out of nowhere so I feel like I'm walking on eggshells. he gets mad if you don't answer right away or say something that doesn't adhere to his beliefs. He once started calling another family member the f word and homo because he doesn't like him.

I have a heavy preference for women (i sometimes wonder if im actually a lesbian) and am worried he won't accept me or my partner