I feel like this world has absolutely zero good in it
Why do you think like that?
I feel like everything is pointless, that all people are selfish and that the only thing that matters are your own goals. It's discouraging.
Everything is not pointless. There are people out there that look out for the good of others.
Nah. People deserve more than this world can offer them.
There are many people you can find that help out others. Do not assume everyone is out for themselves, because they are not.