Minimum wage does serve a purpose, which is to protect the folks that are the least skilled and have the least options.
It does the exact opposite. It causes unemployment. It literally reduces options to nothing for many unskilled laborers. Well, unless you count welfare... it makes that option very compelling.
If it was not for minimum wage, employers would off jobs at $3 dollars an hour, and the folks who have no other option would have to take them.
So? If that is what your labor is worth, then you need to take it and learn more skills. Find anything you can and take it, or else you will never get anywhere.
If your labor is worth more than $3, then employers won’t be able to get away with offering that to you. Your labor is valuable and you will be bid away by competitors, and through that mechanism, your wages will rise to meet their value.