Afraid to come out

My parents are excepting of LGBTQ+ since we have a lesbian cousin and family friends who are gay. But I’m still nervous to tell them I’m bisexual. Especially my BFF because every time I talk to her about excepting people in the lgbtq+ community she acts like a total homophobe and calls it gross. Which hurts me. And I’m not sure how my older brother would react or my very baptist grandparents and very conservative great aunt and uncle who are professors. I’m just super nervous and absolutely DO NOT want my sexuality to be that big of a deal!!! Which my family would make it... ugh I’m so scared it doesn’t help having a generalized anxiety disorder to go along with the fear of coming out T-T. I kept acting so excited towards pride month this year because it’s my first as a bisexual.