Look on www.youtube.com for videos about psychological topics.

Some interesting ones have made it to my choices, from generalized topics like the “Signs Revealed before You Know Someone is Toxic” to more specific ones, like signs of pathological narcissism.

As far as individuals with mental illnesses, at least one family member I would say displays everything from toxic behaviors, for example, can’t share in something that’s joyous to me, to pathological narcissism, and it’s best for all if I not dump entirely, but pull back & distance.