Could my mum’s hurtful oaths be affecting my confidence?

As-salamu alaykum - I’m really upset and need some advice. Whenever my mum and I have mother-daughter arguments, she says things like “I hope you never succeed” and even swears by Allah, saying stuff like she won’t accept it if I get into university, get a job, or earn money. She’s said things that feel like curses about my future and sometimes she adds phrases meaning “God is watching.” I keep hoping it’s just said in anger, but she never apologises. Once she even said she’ll keep me in her duas so nothing good happens to me, or that Allah will treat me according to how I treat her - and that really hurts because I’ve always tried to treat her with love and respect and follow what she asks. Lately I noticed a pattern: I study hard and do well in mocks, but in the real exams I only get mediocre marks, and now I’m on a gap year. I feel like her words - the swearing by Allah and the negative statements about my future - might be affecting me mentally and stopping me from doing well. I also struggle with my prayers even though I want to pray more, and I’m wondering if any of this is connected to Islam or to her promises made in Allah’s name. I’ve been crying all morning and would really appreciate any advice. Is it possible that her hurtful oaths are harming my confidence and performance? How should I approach this from an Islamic and practical perspective? What can I do to protect my faith, my mental health, and my future when someone I love keeps saying such things?