They keep singling me out in class for "being too quiet". I told them this is how I am but he straight up told me to "change that". Wtf? I'm fine how I am thanks very much. You don't know me, and don't give me unsolicited advice.

He keeps going on and on about off-topic things in class, I don't want in on any of it. I participated MORE in class than my friend, yet he goes to my friend and says he's participating well, then he comes to me and says that I need to participate more. But leaving that aside, why on earth would I feel like participating if you mock me when I get an answer wrong in class ? (he didn't make fun of anyone else for getting an answer wrong)

I don't make eye contact with people I don't feel comfortable with (and hint: I absolutely despise this person), and he keeps pushing me about it "look me in the eyes". He keeps targeting me. I am sick of it. I might end up exploding on him one of these days. But I don't want that to happen, I try to conduct myself responsibly.

I laughed it off in the moment, but then I felt angry afterwards. He keeps doing this shit from time to time.

Sometimes he says, "you're lost somewhere". No, I am not. I was paying attention throughout your lecture and I could answer any question you gave to me. I HATE how he thinks he sits in my head and knows me inside out, when he doesn't.

I wanted to say, "Sir, why do you always feel the need to point me out in class?", but the thing is sometimes he does go up to people and ask them to "chin up" (he emphasizes toxic positivity A LOT through what he says to the others) or ask them if they're sleepy when they seem like it (and they're not, lol) - and he does briefly mention the other kids here and there, but he likes to fixate on me for some reason.

Also another reason why I haven't said anything directly to him yet is because the last time I stood up for myself my friend told me I was shaking (and I was) - I think if I'm shaking it defeats the purpose.

I could grey rock the guy but I fear I might lose my mind one day and get into trouble for it.

What should I do???