Natural Buddhism is an approach to Buddhism without relying on supernatural explanations, such as rebirth. It is about awakening, transforming, and flourishing in this one life. As Thich Nhat Hanh said, “Buddhist systems of thought are guiding means; they are not absolute truth.”

Natural Buddhism
https://www.insightmeditationcenter.org/books-articles/natural-buddhism/
Interbeing
https://www.viewonbuddhism.org/resources/14_precepts.html
Kalama Sutta
http://www.buddhanet.net/e-learning/kalama1.htm