Oof... This is a tough one. First, I'll point out that this post is EXACTLY what I'd expect from a narcissist. Woe is me, zero accountability. Assuming you've actually been diagnosed by a psychiatric Dr, they didn't diagnosed you with NPD on a whim. You were diagnosed with NPD after you did something, or more likely after a lot of times doing harmful things, and finally taking some initiative to figure out what's wrong with you. Maybe friends or family had to really push you towards getting help. Maybe your just young enough that seeking mental health help is normalized, so you were able to go for it.

"As someone who has NPD I haven't abused or manipulated anyone ever." -As someone with NPD you wouldn't be able to recognize if you had ever done these things. This entire post is pretty manipulative actually.

NPD is a very tragic illness. One of the worst parts imo is that, almost always, one of the symptoms is the person not being able to truly recognize their own disorder. This can be dangerous, and also infuriating. A person's entire life can fall apart around them, and they are incapable of doing the self reflection necessary to understand why, let alone do the work to fix the problem. People will spend years trying to "save" a loved one, to get that person to recognize that it's THEM who is the problem and needs to do the work, just to get to the exact same spot a decade later because that person CAN NOT recognize it. Recognizing there is a problem is the first step towards fixing yourself. Since NPD usually precludes the person from being able to recognize the problem in themselves, it becomes impossible for them to save/fix themselves. It's truly insidious.

All those things you listed would make you a bad person if you didn't try to correct them. And maybe you actually are. I certainly hope so.

Edit to add: asking someone with NPD to be able to self reflect and do the work to change, is like asking a paraplegic to run a marathon. It might seem to others that the person is REFUSING, when in reality they literally cannot physically do so. However, unlike the paraplegic person, a person with NPD causes harm to everyone around them, and the only thing a healthy person can do is cut toxic people from their lives. It's not the person with NPDs fault (one of the other great tragedies is that it is almost always a result of shit parents) that they are toxic, but they are toxic none the less, and unable to stop it. I'm sorry you ended up this way, I truly hope you can let yourself be treated.