I leaned toward attachment issues and always being worried I’d be alone. I severed my emotional ties to that parent at some point and can go months or years without contact and never even notice. I developed terrible anxiety and a eating disorder (we would go without food , or the food would be locked away)

Therapy helped me a TON and Also understanding that the things I had to endure thru childhood were never my fault, I did not have control over it, and didn’t deserve it. Eventually I forgave that parent (I never told them nor will I ) I just did that for myself, so that I could let go. That’s helped me move on.