Its hard to stay positive with teachers like that in honesty, my english teacher at GCSEs was like it, she kept telling me i’d fail english, and kept mocking my work. Im the kind of person who uses everything someone like that throws at me to prove them wrong. She told me I’d get a 3 in both my English subjects, I ended up with an 8 in both and she was not too thrilled when I took English Language at A-level too.
For me thats enough to get me through it, using anger and upset as fuel.
But it is important to make a complaint, it’s something I wish I’d been more strict with, I let my school talk me out of it. If someone is targeting you personally it is not ok.
I really hope you are doing alright