i don’t have a million posts but i’m afraid there really is no set formula for making posts that get a lot of notes. it honestly is just a case of how many people see it and having more followers so it’s more likely that people will see it. i didn’t used to make posts that got so many notes as frequently and some of my posts definitely wouldn’t get notes if i didn’t have a lot of followers. i’m sorry i can’t give you more helpful advice.