1099-NEC

I’m filing my W2G and my 1099-NEC. I’m Native American and both incomes were earned on native land, therefore I’m exempt. CORRECT? When I enter in my W2G its showing me the amount I’m supposed to get back $300 correctly (since I got the taxes taken out at the casino) but as soon as I put in my 1099-NEC it shows me that I suddenly owe $53 and get nothing back.  I shouldn’t owe anything, I should be getting $300 back since the money I earned with the 1099 wasn’t taxed. What am I doing wrong?????

INFO- My 1099-NEC was sent to me from the organization in my community. It shows nonemployee compensation, I don’t have my own business. This money from my 1099 is from me completing a certificate program for a stipend. Please help!