I told my boss that I was going to have to reduce my hours back to weekends only because college was starting back up again which meant I couldn’t do week day shifts, so they put me down for two mid week shifts and didn’t tell me about them, then they used that as an excuse to fire me.

I’m not a lawyer, but that sounds like classic “constructive dismissal”, which qualifies for unemployment in most states. Of course, you’d have to fight for it, which as a college student, would’ve probably been too expensive and time-consuming. Sorry about the shit boss.