who is wrong

I am a student studying in a public school, I had a good experience in that school, I am just a normal student but many people are jealous because they say I'm a smart kid but I don't pay attention to it because I don't think it's true long story short

On the day of the recognition, I arrived as the one with the highest average among the 3 of us and also had an award for perfect attendance but it was not given to me because I was not able to attend of recognition in the morning because I went home because my stomach was hurting from hunger and in the afternoon I wanted to get the award that I should have gotten but the certificate I only received an honor because I wasn't present for the recognition in the morning, that would be okay even if that's all I received because maybe my absence in the morning will count that's why I was going to let it pass but my teacher said that and immediately got angry with me because it hurts so I quickly went out because I was in tears and decided to take the paper that was given to me and just cry outside of our school and when I got home I begged my parents to transfer me to school because I couldn't handle it if they treated me like that but my parents didn't understand and they even ignore my feelings so this is where my mistake as a person begins, I posted about my teacher's always uneducated person and that was only one there are more posts after this but it's not for her yet and someone actually sent it to my teacher and the teacher immediately embarrassed me because he was telling this to others, both teachers and students, so I was really embarrassed even though to this day I don't know who sent it and I also want to know who it is so that I can confront and explain what I posted but the situation just got worse and worse this is all i can give but who do you think is wrong?