How to make extra money?
Well....there are options I don't recommend. But how about a part time job?
Get an extra job.
Sell things you no longer need.
You can sell blood or other bodily materials ( I. Y. K. W. I. M. ) to medical supply companies. Also, you can go into YouTube. You can make money on ads in your videos. There's red tape, but it can be done. Good luck in whatever you need dough for!
Babysitting washing your neighbors car or lawn moving.
Help around the house if you still live with your parents.... Do odd jobs around the neighborhood ... Dog walker, cleaning peoples yards things like that
Getting two jobs or working extra hours
Well I would imagine you would get a job my friend