Can you practice the beliefs of the Native Americans and still be a Christian?
Christians believe there is one God, presented to us in three persons, Father, Son and Holy Spirit. We don’t worship anyone or anything but Him.
We believe we are saved from the penalty of our sins by the Son’s death on the cross and His subsequent resurrection, and this is the only way we can have eternal life.
Any religion that worships other gods, whether instead of God or in addition to Him, is incompatible with Christianity and is forbidden. Any religion that professes any other way to attain eternal life but through the shed blood of Jesus is similarly forbidden.