Here's an important fact about DNA tests that you might not know: DNA tests showing Native American does NOT necessarily mean USA Indian tribe or nation descent. It just means indigenous people of the Americas (plural). That includes all of North, South and Central America's native people. Therefore, the DNA Native American percentage could mean of Mexican descent, of Peruvian, of Canadian First People, etc., etc.
The best way is to start with you, trace back generation by generation, get help if you get stuck, and then you'll see where you got that DNA result. You can message me thru Ancestry if you need further help.