If it's any consolation I've felt lost for most of my life, hah! What a world it is. I don't envy you what you're going through. I wouldn't want to be twenty now, too much focus on planning for this and saving for that, making good choices, acting responsibly. People tend to get by whatever they do, how comfortably they get by is another story, but it depends what you need to make you happy.
I don't think you have to decide everything at once, how do you know what you'll want to do in ten years time, twenty years time? Take your time, think about it for a while, get your bikes, get
any bike and get out and ride for a while. Don't put yourself under too much pressure trying to decide everything all at once.
Whatever you decide do it for yourself and not because it's what you think other people think you should do. Things fall into place, opportunities come along unexpectedly, new thoughts, new ideas. It's okay to feel lost at times, lots of people feel lost at different times in their lives.
Everyone is different; needs/thoughts/dreams/whatever. Others may be going through worse things but that doesn't make your problems any less.
Life is hard, I think, or it can be. But what's the alternative??
I hope you find what you're looking for.