Can someone please explain why I made less money last year and got a decent refund, but made more money this year and I'm only getting twenty dollars?

There are a few reasons why your refund is different than it was last year. Your income may have changed, your withholding may have changed, if you make estimated tax payments, they may be different than the year before.  Also, your credits and deductions may have changed.

Refer to the TurboTax article Why did my refund go down compared to last year's? for more information.