Happy to.
I feel like if I was finally able to go out and meet people it wouldn't be what I expected. Like what if my feelings somehow changed and I don't actually feel the way that I do? I don't really want my feelings to be "a phase" but I really wouldn't know what I like or want if I don't go out for experience.
It may well be that when you start meeting people it won't be what you expect, in a lot of ways, probably in some you're thinking of and in others that aren't on your radar or otherwise part of your expectations.
But in my experience, self-discovery, in particular learning things about what we want and what we don't, tends to be more positive than negative for people, because it makes us within closer reach of creating or finding what we want. By all means, if and when we learn things that contradict something we wanted to be, we can need to make some uncomfortable adjustments sometimes, but that's okay. Those usually are things we can all handle.
I also want to remind you that human sexuality tends to always be shifting, changing and evolving over a lifetime -- when people let it, anyway -- and so honestly, all of our sexualities are always in a phase one way or another. Phases, when they exist, don't make the place we were in before any less valid or relevant than the place we're in next. For example, just because you're a young person now doesn't make the phases you were in up to now -- infancy, toddlerhood, childhood, etc -- any less real or impactful. Can it be hard to move from one phase to another sometimes, and might we have grief about it sometimes? Yep and yep. But if and when that ever happens to you, be it about your sexual identity or something else, you have the capacity to experience that change and any grief around it, process it, honor the whole thing, and keep living your life, you know?
That said, I think that people telling you your bisexuality is a phase have really gotten into your head. If you feel it, I think you can trust that that's because it's there. Other people can't and won't ever know better than you when it comes to yourself. You're the expert of you.
I feel like I'm running out of time in figuring myself out and I don't have anyone to talk to about it because I rely on my parents so much I'm scared they kick me out.
There's not only no timetable on figuring yourself out, that's literally a lifelong process for everyone, and that includes when it comes to sexuality. There's no "too late" starting on any of this -- throughout history, so, so many people have only even realized they were queer or trans decades later than the age you are now. You can't run out of time for this because your whole life is the time you have for this. It might help to know, too, that a lot of people won't ever feel like they totally know for sure what their sexual identity is, or what its whole shape looks like. Again, that's largely because this is something we're all learning through all of life -- heck, even as someone who was very precocious, and earlier than most people when it came to things like dating and sex and sexuality, and who is a sex educator themselves -- I'm still learning things about myself in this arena all the time, and I'm in my 50s.
I also want to make sure you know that most folks your age these days are in a similar place you are -- not entirely sure about a lot to do with their sexuality, and often with little to no life experience exploring it with other people. You're not behind in this, I absolutely promise you.
That said, I hear that living at home with your parents is something that's both really limiting you, and making you feel very fearful about all of this. Would you like to talk some about your living situation and see if it isn't possible to at least start planning to make a change so you can live independently in time?
Just to be clear, what kind of help can we offer you to make you feel less anxious? Is there anything that prompted this feeling?