How does a person truly live in a house who is againts LGBTQ+

I have been Bisexual, since I have been 16 years old. I have never been able to truly express it since I live in a family that despises anything that is "gay" and not "normal". It has been very difficult to pretty much walk on eggshells near them, if they were to ever figure out I am Bi. I believe they would throw me out. I have heart condition, so I truly can not live on my own completely. If I lived with roommates something like that it could work. However I have a job that my sister drives me too, it pays good money. I need to learn how to drive just so I can be more independent(was sheltered my whole life, which could explain another reason why I could not express who I really am.)

I  do hope that I can express myself better, once I am able to finally be able to do things truly on my own. With out my family's control.