How are you supposed to work on SSDI? Disability benefits?

How are you supposed to work on SSDI? Disability benefits. I’m on it mainly for depression and I don’t even earn enough to buy stuff i want. I need a way to earn more money! But I don't know what to do cuz i can’t get a normal job. I couldn’t pass high school and no G. E. D is not an option cuz that’s just as hard.
How are you supposed to work on SSDI? Disability benefits?
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