Why do you want to manipulate people emotionally? It is a psycological crime nobody deserves.
There are two ways to control or manipulate people, one is direct (verbal and actions) or indirect (leading actions). Know that there are certain people who are bullet proof to psycological manipulation, it is often the weaker ones who become victims.
To break down someone you need to be important to them firstly for your words or actions to have weight…. You know what… I’m not gonna tell you anything man this is wrong. If someone treated you badly and you want revenge think about it, maybe it wasn’t really aboit you? What if they’re just immature or incapable of controlling their own actions? What if it’s more about them than you?