When toxic people know they've done you wrong, they'll often become fixated with trying to destroy your reputation by spreading lies and slandering information about your private life. Victims don't create smear campaigns. Guilty people do.
If you want to figure out who the real narcissist is and who the actual victim is. Look at who stands alone. The victim is almost always hated for carrying it on their own. While the narcissist is surrounded by groups, enablers and people who laugh along to keep it going