same struggle here, I know I have indigenous heritage de mexico but can't get specifics cuz I been stuck on this side til recently por mojada.
the way I was taught by my folks was that if u got native blood on native land its on you to uphold your responsibilities to the air u breathe and the water you walk on.
being mestizo is of course an entirely different experience than growing up on a rez or with living connections to your ancestry, but I've been welcomed by hella natives who understand the situations.. so many natives were stolen and adopted out to white families, forced off to boarding schools, been ripped from their heritage and can have a huge uphill battle to reclaim their roots.
my bad for the long ass post just I think about this heavily.. cuz I feel that what guides me is ancestral memory, and I'm always looking for the way to balance out honoring my indigenous heritage without false claiming aspects of native culture like it's mine. plus there's just so many folks who are in the same situation trynna figure it out a la misma vez