Does anyone have some tips for a struggling highschooler's research paper about religious syncretism in ancient Latin American civilizations?

So I'm writing a research paper about to what extent did religions present in pre-colombian latin America affect Christianity in those regions today. Im fascinated in ancient Latin American civilizations like the aztecs and mayans so I'm really passionate about this topic but i just cant for the life of me find helpful sources! I was wondering if yall had any tips on sources i could use or key search terms, or any useful information. I have access to many academic databases but I'm having a lot of trouble finding anything useful on them. The only good things I've found are from basic google sources and I need more academic/peer reviewed sources. I would be grateful for pretty much any help I'm really having a tough time right now working on this.