There's a friend that keeps applying to the same jobs as me and it makes me mad.
What about this makes you so upset?
We both have the same skill set and are just as good as each other at things, yet they always apply.
You shouldn't be so upset about your friend applying for the same jobs as you. They are just trying to improve their life. You should be supportive and glad that there's a good chance at least one of you will get hired.
These are jobs that I want for myself and I don't want just any job.
Your frustration is a bit understandable, but ultimately your friend is just trying to find a job too and you shouldn't get mad at them for it. Perhaps have a conversation about your feelings or don't share with them each time you apply for a job in the future.