@Sunflower5 I am so sorry to hear what has happened.
I've been in a similar position myself with my mother telling me that 'I'm a mistake and that I shouldn't have been born', I had that throughout my life as a child. Fast forward many years later and after constant abuse I made several attempts to take my own life, when she found out her response was 'What a shame you failed, maybe try harder next time'.
I thought i would never be able to get away from that situation as I was scared but also had that bond (trauma). I did eventually get the courage to walk away and it was good to get away from her and the behaviour towards me.
I know there is services that can help with family situations, wondering if that's something you could look into? Also going to a gp and getting some referrals to get some therapy/support for yourself could be another option for you.
You are not alone and we are here to support you however we can.