Not sure how to find a balance between university and work

I'm a 20 y/o student currently in my second year of university. Long story short, I have a part time job that I hate, but the fact that I can basically work how much I want each week and get paid depending on the number of hours keeps me staying (seems pretty cool but the hourly pay is utterly low). My problem is that my university schedule doesn't really give me time to focus on something else except for Friday and the weekend. I can't commit to a 20 hr/week part time and I was wondering if you guys had any ideas, like anything I could do from home to earn some cash.

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