How do yall deal with toxic parents?

As the title suggests my(M17) parents(mom especially, like 99% of the time) is toxic asf. This toxicity only began when I started 12th grade this year.

Like I would say I am in the top 10% in my school. I am very well above average in academic some would consider me a topper(in the toppers section in class 12). But my mom is just straight up toxic.

If one score well in one exam, I don't get any appreciation, no good, no congrats nothing. But the moment I get a low mark say 60/100, my mom goes on fucking lectures on how i am a disgrace, how I won't get into a good college, how much money she has to spent on me. The list goes on.

I am literally sick and tired of it. Aleast if she appreciated me for the good marks I scored, it would be fine but no! Apparently it's my "dUtY tO sCoRe GoOd MaRkS".

All of this is fine. But today when I told some story that happened at school and the convo shifted to marks smth like that how everyone is scoring low marks since he papers set by our school is tough(which is indeed true), she just straight up said "I am lying to her, I am fooling her and the truth will only come out if she comes to pt meet"

Like how the one people in my life who I thought I can trust say something like this to me? Aleast if I was lying, I would not be hurt, but I was saying the truth. Like does she not care what I was think if she says something like this?

TDLR : mom is very toxic about my marks even though I am a topper(as considered by the school) and doesn't even appreciate me for scoring good mark but bashes me for scoring a bad mark(60/100). Now she is saying I am lying to her even though I said the truth that everyone is scoring low marks since the paper was tough.