It may feel like your voice isn't being heard, like you as an individual don't matter in the scope of the world. Just know this. You do matter as a person, and your voice matters. You being here does make a difference in the world.
You may be suffering through something that makes you feel hurt, isolated, and alone. But, there will always be others who have gone through the same thing, or are currently going through it. There will always be other people who understand and appreciate you, even if they're not close by. They are with you in spirit, always. So, you are never truly alone.