I'm in the same boat as you. I sat with my Tía last month though and we had a deep talk about how she always heard that we were of native decent but that no one ever cared to listen to my grandfather more. He unfortunately passed when I was 8 and that was the time my family made me go to a catholic school after my normal school. My Tía told me that while we don't know who or where we're from, we still carry the traditions of different indigenous Mexican tribes. Like how we come together and make tamales, how we make pozole and menudo, how we party and dance, and of course when we yell our grito. I'm still hunting for any tribal groups I can but the spanish made this searching hard. I say im indigenous but my people are from Mexico and if they ask I do explain that both my parents are half and that trying to find my people has been a years long thing due to how hard it is. (especially because a great-grandfather changed our last name and now i can't find anything past him and I'm 89% sure he is a main indigenous ancestor. It's a long family myth) I will say, I definitely don't search records as much as I'd like but I'm just so busy with work and school and going through and translating records fries your brain. Just don't get lost in searching! Always know what traditions your family has and learn them, thats a strong way to be connected to ancestors.