My problem: social anxiety

Hey! I'm back from school so I decided to share something with you. I don't even know how I did this because often I'm scared, but this is the only way.

I have social anxiety which is really hard for me especially when I'm presenting in front of the people. Today I had to present in front of 20+ people and I was feeling uncomfortable and I'm still shaking a little bit and worrying what they think about me, I'm so scared right now and I don't even know how I function.
Here's how it happened:
It was another bad day for me in the school, I got 1 (F) and then Geography class came. It became worse that it couldn't get any worse. Teacher said that she's gonna pick few people for presentations and I was praying to God not to be me, I was really nervous and then she opened me and said my name, it was like hell. So I made it and today I presented, I was letting other people to go before me because I was scared. My time came and I sat on the chair in front of my classmates and my teacher, I didn't feel comfortable. I was saying everything so fast that I don't even know if they understood anything, I was slightly shaking too, but they didn't notice it, I hope. The problem was even bigger when I couldn't find arrow keys on laptop and they started yelling "Press the arrow keys", but I was in kind of panic and then I pressed random button. After I was done with presenting I just didn't know what to do, so I went to my seat and teacher asked other what they think about it, another bad moment, wow 3 in row. I just couldn't wait till I get home and share this with someone, somehow.
Nobody, expect my mom, knows that I have social anxiety, it's giving me a big problems in my life, like HUGE. Why me?

I hate this

Hello everybody!

I'm having a hard time this year because I'm finishing 8th grade and I still don't know in which school I will go after 8th grade.I don't know how it is in your country but here after 8th grade we're going in secondary school(high school),you have to be 15-16 years old.The problem is that I have no idea in which type of school to go.Every school is specific for some job so I have to pick the school with job I want to do,I don't know how to explain it better.I'm not perfect at school like all 5(A's if you are from UK).
Some subjects I'm not good at:

• Maths
• Chemistry
• Physics
• Croatian 

and most of school are asking for those subjects,I just can't somehow learn them.It's almost the end of 8th grade,few more months and I still don't know what I'm gonna do in future,it all depends on school I will go to.Everybody is asking me "In which school are you going?" and I'm like "Oh I don't know yet...um".I need some serious help here,now if you ask me what I want to be in future,this will be answer "I want to be youtuber or professional blogger just like Zoella,Alfie,Jim and other youtubers,I want to live like them but it's hard because there is no school for youtubers or bloggers.All I'm asking for is HELP from anyone,I need help,even my parents don't know in which school I will go because for most stuff I'm useless expect for eating,sleeping,blogging,talking to complete strangers and do some manly stuff.

If you have any idea PLEASE post in comment,it would mean everything to me :)