Why is school already overwhelming? + other issues

I feel like a failure ALREADY. I had a bad day at school today and a not-so-great day yesterday. I bet tomorrow will be bad too. I feel so many emotions at once and it's so hard being ME. I keep setting up many high expectations and I'm bullying myself for messing up everything I do. I can't focus on my successes and I'm immaturely displaying my emotions in my room. I feel hatred in my Spanish, Civics, and Math class. I struggle to understand, communicate, and learn in my Spanish and Math class... as I don't understand the teachers very well. My Spanish teacher seems to stutter and seems awkward when she talks in English, they also do teaching methods that make me confused. My Math teacher is from a different country and talks way too fast with an accent I'm not used to. I don't want to blame those two teachers, but it makes things harder to freaking learn. I'm scared, intimidated, and hate my Civics teacher. He seems harsh and grumpy. I had things set up for me the past few days... I was feeling happy and good (or at least neutral)... but now I'm feeling stress and pain. I'm trying to fight against my Social Anxiety, but IT'S NOT WORKING ANYMORE. I didn't try any activities today, I didn't talk, I didn't do anything. I'm trying to make a friend in my Math class (as someone nice sits next to me), but I didn't say anything to them. I just rushed out the door when the bell rang. I HATE MYSELF SO MUCH, I can't focus on self-compassion. I am in advanced classes and I wonder why I was put into an Algebra I Honors class. I set up too many high expectations of me... and I can't STOP. I CAN'T STOP. I feel so much PAIN. It's the freaking start of school... and I already feel so much pain. I keep every emotion I have inside of me... as I feel the reasons for my emotions are stupid and not worth talking about. I consider myself a HSP, and I suffer with Social Anxiety, some Depression, and some Anxiety. I also have anger issues, but that may be the results of my mental health struggles. ALSO... whenever I get lectured, scolded, or told to stop something wrong... I'll get extremely anxious very quickly, feeling the need to cry. I'm not used to getting into trouble, I'm not a troublemaker kinda kid... but I struggle to deal with criticism, lectures, yelling, scolding, and other discipline speeches and tactics. I can't tell if there's an in-depth reason for WHY I feel the need to CRY after getting into trouble (even it's a little lecture.) I'll feel very wrong and like I messed up very badly, even if it's a mishap. I can't deal with my emotions, I feel so many at once. It makes me scream and die inside. I just needed to vent this out... I'm not ready for Friday. I wish I could go into the weekend already and sleep all day or something. Thank you if you read all this, I hope everyone has a blessed day, blessings in general. 💖