I'm genuinely shocked that you're the only one in this thread who picked up on "I'd never heard of narcissism until I recently watched some YouTube videos and concluded that both my parents and several of my relatives are narcissists.".
I'm not going to say it's impossible, but I'm highly skeptical.
Regardless of the reliability of the definitions used, I really do think you have provided the best advice in this thread. OP, if you read this, I agree with them full-heartedly. Seak out whatever counseling you can and look to more than just YouTube / the internet for information.
How in the world are you able to live off $5k/year? My last months credit card bill was $2.6k and I don't even pay rent or tuition on my card. I'm also single with no dependents, own my own car, and have extremely cheap rent.