I want to come out to my parents, but not knowing how they’re going to react is scaring me

I (17 MtF) have been thinking a lot recently about coming out to my parents. I’m so tired of having to hide everything and always jump when I hear them come home when I’m doing something that could even seem feminine. I’d rather just be able to come out and just be honest with them, but the thing I’m scared about is the fact that they’re hardline Christians and conservative in a deep red state. I’ve heard the common lines about gay people and even some trans lines, but when I talked to my brother about it, he said that they would accept me. I’m afraid of losing everything, but I’m so tired of hiding and being scared. Any advice is welcome <3