Hi @Serezza and welcome to the forums 👋
I had a narcissistic husband. There are distinct patterns to this particular MI that are identifiable - 'love bomb", devalue, discard.
Like a cat-and-mouse game they can keep you oscillating between the love-bomb and devalue stages, switching backwards and forwards between them, or supporting other people to devalue you (triangulation) and their primary damage is to destroy your self esteem ...... they drink of other people's distress, devotion, dependence, adoration and servitude. They can suck you dry.
They can also be very subtle about it for a very long time to keep the game going, but there is nothing subtle about the discard stage.
Maybe speak to a counsellor and see whether this picture fits your situation, because if it does you will need support to regain your self-esteem and confidence.
Pile on the self-care Hon. It's not selfish - which might be how you were made to feel - it's necessary, and it is a big part of the antidote to that sort of toxicity.
Take courage @Serezza. You are not a failure. You are enough ❣️ And we are here to help you find yourself again.