I've been all over this stuff for a while, it's a huge rabbit hole. I'm glad more are taking interest.. some worthy stuff to check: very weird relations on ancient sites all over the world:

Exploring Geographic and Geometric Relationships Along a Line of Ancient Sites Around the World - Graham Hancock Official Website

Exploring Geographic and Geometric Relationships Along a Line of Ancient Sites Around the World, by Jim Alison

the BAM series starts with old sites then focuses on the Barabar Caves in India which are IMO the most incredible structures found to date: BAM 1 BAM 2 this guy interviews most of the people on the space if you want this format: https://www.youtube.com/@MattBeallLimitless