I feel like things will never improve for me.
What do you think will never get better?
Finding a job that pays me enough to sustain my life.
Everyone feels down from time to time, but if you're always focused on negative things, people will become annoyed with you. People don't enjoy talking to people who always bring the mood down, so you should try to be more positive in how you talk.
Nah I'm just going to get a second job.
If a second job will help you improve your life that's a good thing to do. Just don't work so hard that you can't enjoy yourself.