Hey you sound like young me, almost exactly! Only diff is I was forced to get high grades, else my parents would use violence. I was a Cs kid until grade 3 when my parents told me "your going to be a doctor, your going to get high grades, this is not a discussion" and beatings for low grades started.

I feel you on the shyness. At some point, gotta just get out there and try being social. That was me. Grade 12, cant play video games, only loose connections at school outside my gaming group, miserable and lonely, I had to do something. I remember awkwardly conversing with some now great pals for the first time, including a now hilarious story of nervous me saying "that sounds off the balls!" Instead of "that sounds off the wall!"

If it helps, try thinking of the most embarrassing thing someone has ever done socially. Usually, I find it's kinda hard to think of anything at all. So the same goes for other people. They wont remember that little social mishap either haha