How to run a intrigue-centered campaign? (DND-5e) [closed]

This is gonna sound really, really stupid, but the reason I come to this site is not for straight answers. It’s for advice. So I hope you’re not mad at me when I ask how would you go about running an intrigue-centered campaign? By that, I mean things like power struggles between kingdoms, deep multilayered plots, and the kind of mysteries Sherlock Holmes would be interested in solving.

Regardless of what happens to this question, whether it gets shut down or if it gets odd comments, I’m sure it will help me to either understand what I want to do with this campaign or help me understand this site and how it works, and what type of answers and comments I’ll get.